Top universities offering llb 3 year course are-

1. Faculty of law, du

2. Symbiosis law college, Pune 

3. Jindal global law school, sonipat

4. Government law College, Mumbai 

5. IlS law College, Pune 

6. Faculty of law, Banaras Hindu University 

hope this is helpful to you.

Hey.
Here is a list of a few top Colleges/ Universities offering a three year LLB course in India.
Delhi University
Government Law College, Mumbai.
Indian Law Society, Pune
Banaras Hindu University
Panjab University, Chandigarh
School of Law, IIT Kharagpur
Symbiosis Law School, Pune
Jindal Global Law School.
UCL, Osmania University, Hyderabad.
Best of luck!