Which course should I pursue to get good career prospects, BMS or BBA?

BBA is a better course in terms of career opportunities and growth. There are more jobs available for BBA as compared to BMS but BBA and BMS is equivalent. You can choose anyone of them.

Both BBA and BMS are equally good similar degrees. Syllabus of both degree course is almost similar in most of the universities. There is only nomenclature difference between both the degrees. You may choose Institute for Management graduation degree based on its reputation not on degree name.