I am very much interested in dance. So should I take a one drop or not applied for MBBS. Or I have to move for B.Sc.

If you believe in yourself that you can score good in NEET/AIIMS exam in the next attempt, then you can take a year drop. Also, ask yourself whether you want to become this or not. Ask yourself whether dance is your hobby or passion. If passion, you should practice hard and give your best in it. Don