Hii Pallavi.. The best school accepting NMAT score is obviously NMIMS Mumbai.

The colleges in order of their ratings are-

NMIMS Mumbai (212 and above)

NMIMS Bangalore (199 above)

NMIMS Hyderabad (190–195)

NMIMS Navi Mumbai (185+)

If are not satisfied with the college you will get then you can reapply.

You can apply for the exam again but you will have to apply separately and fill out the forms again (for the exam as well as the colleges). Though the exam is costly, but NMIMS Mumbai is one of the top B-schools in India.

Hope this helps you. All the best.