hi,

after passing 12th from any stream you are eligible to do 5 years integrated llb courses. the most common entrance test for law is clat, (common law admission test). you may follow the below link to know about clat.

https://law.careers360.com/articles/clat

some other institution which offers llb courses after 12th is ,

Gujarat National Law University, Gandhinagar, Gujarat

National Law School of India University, Bangalore

Symbiosis Law School, Noida

Indian Law Institute, New Delhi

• Government Law College, Mumbai