Hi Rudresh!! Hope you are doing well!! Since you are going to complete your BA,you should start preparing for CLAT exam .Through this exam ,you will get a chance to take admission in the best law colleges of our country. Some of the best LLB colleges are-:

1. National law school of India university,banglore

2. National law University,New delhi

3.Jindal global law school,panipat

4. National Law University ,jodhpur

5. Gujarat national law university,gandhinagar

For more college's, you can refer the given link- https://law.careers360.com/colleges/ranking