Hey,
BMS- bachelor of management studies is a undergraduate degree which is designed for those who wish to persue their carrier in business. BMS doesn't offers a magnificent scope in terms of jobs and other things in india. But it enables you to get a internship in any organization, it will help you to develop managerial and leadership skills that you require in order to survive in a global organization. If you persue your MBA after BMS then you'll finally land up at any good job that's for sure.
It depends upon your interest what do you like most either BBA or BMS. Students pursuing bba or Bms both do mba eventually for higher placements and better future in corporate industry.
I wish you all the luck
Cheers!!