It is advisable not to think of how much you know maths but carefully analyze your interests and aptitudes before choosing an alternative and then steadily work towards honing your aptitude and skills in your specific area of interest. From the broader approach, the narrower and reach your pinnacle. Top notch institutes for are IIM-Indore, Shri Narsee Monjee College of Commerce and Economics, K. J Somaiya Mumbai, Lovely Professional University, Punjab, Delhi University, Christ University, Bangalore, M S Ramaiah University, Bangalore, Madras Christian College, Chennai, Mount Carmel College, Bangalore,Mumbai, Wilson College, Mumbai, Lala Lajpat Rai College of Communication & Economics, Mumbai.
If you are weak in the Maths then don't go to that subject at all. Yes you can go to B.com(hons) or B.com (comp) also. becouse the math is touf and you can't handle those problems at all.
So please go with the B.com(hons).
ALL THE BEST.