Dear Rohit,

Greetings
BMS is comparitively a new course and is meant for people from diverse educational backgrounds.
Whereas, BBA is more reputed and is meant for people mainly from commerce background.

The curriculum of BBA consists of various industry related courses which will help you find a good job.
On the other hand, BMS consists of various diverse subjects, which will give you good exposure but it wouldnt provide you in depth knowledge.

Also, if youre planning to an MBA after your graduation, then BBA would be the better option, no second thoughts about it !

But if you're able to secure admission in Delhi University for its BMS programme, its an equally good option.
Otherwise, BBA would be better option anyday.

I hope this helps!