Hey.

NMAT is just an exam that you need to give to be eligible for admission into top B schools accepting NMAT score. But to be eligible for admission you need to fill the form of the respective college separately.

You can check on the official website of the respective college to see if the last date of registering is still left.

I have mentioned the links of few college below you can refer to that,

https://www.spjimr.org (https://www.spjimr.org/)

https://www.nmims.edu/

Hope that helps.

Thank you