this is for all 4 subjects in each subect you should score above 55 for the safer side and to be elgible for any cource you want to apply for.

Are you asking for AIIMS? If yes then you should have minimum 60% Aggregate score of English, Physics, Chemistry, and Biology in class 12th as a General & OBC category & 50% as a SC & ST category. You can check the furthereligibility with the given below link.

AIIMS Eligibility

Good Luck!