hey,

best college for B.com (//B.com) in mumbai are

1. St xavier's college , mumbai

2. narsee monjee college of commerce and economics , mumbai

3. St andrew's college of arts science and commerce , mumbai

4. HR college of commerce and economics , mumbai

5. KJ somaiya college of arts and commerce [KJSAC] , mumbai

best colleges for B.Sc in mumbai are

1. St xaviers college  , mumbai

2. elphinstone college , mumbai

3. ramnarain ruia autonomous college , mumbai

4. kirti M doongursee college of arts science and commerce , mumbai

5. ramniranjan jhunjhunwala college [RJC] , mumbai

good luck!