Hey Shiwam,

There are many college & almost every University provides 3 years Law degree. 

Allahabad University, BHU, AMU, you can apply in every University in your state.

Hey.

There are various colleges and universities that offer a 3 year law degree. For admission in these there are separate entrance exams for each of these colleges. A few Law colleges and their respective entrance for admission are-

DU LLb- Delhi University 

MH CET- GLC Mumbai, ILS Pune and other law colleges in Maharashtra  PU LLB- Panjab University,Chandigarg

TS LAWCET- Law colleges in Tamil Nadu

BHU LLB- Banaras Hindu University.

BVP LLB- Bharatiya Vidyapeeth University

 LSAT- Private Law colleges like O.P. Jindal Global Law school, IIT Kharagpur etc

PU LLB- Admission un Panjab University, Chandigarh and it's regional centres.

Symbiosis Law school, Pune 

You can apply for these in your final year and you'd be eligible to take admission only if you score the minimum qualifying percentage in your UG degree which is usually 45-50%.

You can use the link below for any other information.

Https://law.careers360.com/articles/9564-law-entrance-tests/amp

Best of luck