Dear Utkarsh

There are many colleges in Mumbai available as option for BSc course. Some of the best ones include St. Xaviers, Elphinstone College, Ramnarain Ruia College, IIT Bombay, University of Mumbai, Narsee Monjee College of Commerce and Economics, DY Patil University, etc.

You can apply for the admission and fill the forms these colleges. Depending upon the cutoff you may get admission in  one of those colleges. In case you do not get a government college, you can also look towards private universities like Amity University, DY Patil, etc. 

All the best!