Hey Akash ,

As per your mentioned query , you will be glad to know that yes it is possible to do LLB after 12th.  You can join courses like BA LLB ,BBA LLB,  Bcom LLB. The duration of these courses is 5 years .  Coming to the admission process some colleges take admission on the basis of entrance exam score. And some take direct admission on the basis of your class 12th marks.  The most popular entrance exam for this course is CLAT , AMU LAW,  AILET ,  MH CET LAW ,  CUET BA LLB , TS LAWCET and so on.

To know more ,  refer this :

https://law.careers360.com/articles/law-courses-after-12t

I hope this helps you!