Hii Kamolika..

BBA is Bachelor of Business administration which is a three year year undergraduate professional course for which the eligibility is passing class 12th from any recognised Board of India. Being a PCM student you are eligible for BBA undergraduate course if you pass class 12th from any recognised board. 

The best colleges of BBA in India are-

• Indian Institute of Management, Indore.
• Christ University ,Bangalore.
• NMIMS ,Mumbai.
• Symbiosis International university ,Pune.
• Delhi University, Delhi. 
• Sikkim Manipal University. 

Hope it helps. 

Best of  luck for your future.