diff --git a/routes/users.js b/routes/users.js
index 887edf7..3a55c26 100644
--- a/routes/users.js
+++ b/routes/users.js
@@ -19,19 +19,25 @@ router.get('/', function(req, res, next) {
 // 회원 가입
 router.post('/signup', async function (req, res, next) {
   try {
-    var username = req.body.username;
+    var email = req.body.email;
     var password = req.body.password;
     var nickname = req.body.nickname;
     var profileImageIndex = req.body.imageindex ?? 0;
 
     // 입력값 검증
-    if( !username || !password || !nickname ){
+    if( !email || !password || !nickname ){
       return res.status(400).send("모든 필드를 입력하세요.")
     }
 
+    // 이메일 형식 검증
+    const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
+    if (!emailRegex.test(email)) {
+      return res.status(400).send("유효한 이메일 주소를 입력하세요.");
+    }
+
     var database = req.app.get('database');
     var users = database.collection('users');
-    const existingUser = await users.findOne({username: username})
+    const existingUser = await users.findOne({username: email})
     if(existingUser){
       return res.status(409).send("이미 존재하는 사용자입니다.")
     }
@@ -42,12 +48,14 @@ router.post('/signup', async function (req, res, next) {
 
     // 신규 유저를 DB에 저장
     await users.insertOne({
-      username: username,
+      email: email,
       password: hash,
       nickname: nickname,
       profileImageIndex: profileImageIndex,
       rating: 18,
-      score:0
+      score:0,
+      win:0,
+      lose:0
     });
 
     res.status(201).send("사용자가 성공적으로 생성되었습니다.");
@@ -61,23 +69,23 @@ router.post('/signup', async function (req, res, next) {
 // 로그인
 router.post("/signin", async function (req, res, next) {
   try {
-    var username = req.body.username;
+    var email = req.body.email;
     var password = req.body.password;
     var database = req.app.get('database');
     var users = database.collection('users');
 
     // 입력값 검증
-    if (!username || !password) {
+    if (!email || !password) {
       return res.status(400).send("모든 필드를 입력해주세요.");
     }
 
-    const existingUser = await users.findOne({username: username});
+    const existingUser = await users.findOne({email: email});
     if(existingUser){
       var compareResult = bcrypt.compareSync(password, existingUser.password);
       if(compareResult){
         req.session.isAuthenticated = true;
         req.session.userId = existingUser._id.toString();
-        req.session.username = existingUser.username;
+        req.session.email = existingUser.email;
         req.session.nickname = existingUser.nickname;
         req.session.profileImageIndex = existingUser.profileImageIndex || 0;
         req.session.rating = existingUser.rating;
@@ -113,17 +121,17 @@ router.post("/signout", async function (req, res, next) {
 });
 
 // 점수 추가
-router.post("/addscore", async function (req, res, next) {
+router.post("/score-update", async function (req, res, next) {
   try {
     if(!req.session.isAuthenticated) {
       return res.status(400).send("로그인이 필요합니다.");
     }
 
     var userId = req.session.userId;
-    var addScore = req.body.score;
+    var isWin = req.body.isWin;
 
     // 점수 유효성 검사
-    if(!addScore || isNaN(addScore)) {
+    if(!isWin || isNaN(isWin) || isWin > 1 || isWin < -1) {
       return res.status(400).send("유효한 점수를 입력해주세요.");
     }
 
@@ -132,8 +140,16 @@ router.post("/addscore", async function (req, res, next) {
 
     var findUser = await users.findOne({_id: ObjectId.createFromHexString(userId) });
     var userRating = findUser.rating;
-    var userScore = findUser.score + addScore;
+    var userScore = findUser.score + isWin;
 
+    var winCount = findUser.win;
+    var loseCount = findUser.lose;
+
+    if (isWin > 0) {
+      winCount += 1;
+    } else {
+      loseCount += 1;
+    }
 
     // 급수에 따른 필요 승급 포인트 결정
     let requiredPoints;
@@ -173,6 +189,8 @@ router.post("/addscore", async function (req, res, next) {
           $set: {
             rating: Number(userRating),
             score: Number(userScore),
+            win: winCount,
+            lose: loseCount,
             updatedAt: new Date()
           }
         }
@@ -186,6 +204,8 @@ router.post("/addscore", async function (req, res, next) {
       message: "점수가 성공적으로 업데이트되었습니다.",
       rating: Number(userRating),
       score: Number(userScore),
+      win: Number(winCount),
+      lose: Number(loseCount),
     });
 
   } catch(err) {
@@ -214,7 +234,6 @@ router.get("/score", async function (req, res, next) {
 
     res.json({
       id: user._id.toString(),
-      username: user.username,
       nickname: user.nickname,
       rating: user.rating,
       score: Number(user.score) || 0,