diff --git a/apps/quiz/serializers/participant.py b/apps/quiz/serializers/participant.py
index ba931f7..4635a12 100644
--- a/apps/quiz/serializers/participant.py
+++ b/apps/quiz/serializers/participant.py
@@ -35,6 +35,25 @@ class QuizParticipantSerializer(serializers.ModelSerializer):
 
     def create(self, validated_data):
         answers = validated_data.pop('answers', [])
+        
+        quiz = validated_data.get('quiz')
+        total_questions = quiz.questions.count()
+        correct_count = 0
+        questions_map = {q.id: q.correct_answer for q in quiz.questions.all()}
+        
+        for ans in answers:
+            # Depending on if ans['question'] is an instance or ID
+            q_id = ans.get('question').id if hasattr(ans.get('question'), 'id') else ans.get('question')
+            option_num = ans.get('option_num')
+            if q_id in questions_map and questions_map[q_id] == option_num:
+                correct_count += 1
+                
+        question_score = round((correct_count / total_questions) * 100) if total_questions > 0 else 0
+        
+        validated_data['question_score'] = question_score
+        validated_data['timing_score'] = 0
+        validated_data['total_score'] = question_score
+        
         obj = super().create(validated_data)
         answers_objs = []
         for ans in answers: