The admission criteria for BBA may vary, for some institutes maths is a compulsory requirement while for others it won't be mandatory.

If you are from science stream, you can also apply for BBA, if you are eligible as per the requirement of the college/university you apply in.

There is not much issue if you are from a different stream. As you are taught about the subjects and the courses from the very first year and there is no need to worry about the learning.