what all exams can a commerce student do like how science student do jam neet

As a student of commerce you cannot appear for NEET. For being eligible for NEET you should have completed your 12th in Physics, Chemistry and Biology. But Commerce stream wouldnt have these subjects and so you cannot appear for NEET. You can atleast have Biology as an additonal subject but should have Physics, Chemistry and English as core subjects in your 12th.