Hello Priyanshu Raj,

• BBA is the bachelor of BUSINESS ADMINISTRATION. BMS is the bachelor of management study.
• In BBA you learn about Business,Trading, Marketing and business related everything. In BMS you learn about management, how to manage the situation in business and trading.
• You should choose which do you want. If you want to become a manager you can choose BMS, if you want to go in business field and trading,marketing you can choose as you want.
• But both are different in their study. In BMS you will study with your 12th standard Mathematics and in BBA you will study with your 12th standard commerce like account study economy etc. 

Thanku.