Hello,
Tentative dates are given below-
Notification and Application Form will be issued in the second week of February, 2020
Exam will be conducted in Second Week of May, 2020.
Results will be declared in Second Week of June, 2020.

For more details regarding this, consider visiting the following link-

https://law.careers360.com/articles/bhu-llb-important-dates/amp

Hii..

As you ask about the application form for the BHU Banaras Hindu University for LLB 3 year course 2020 am so the date for the online application form will second week of the February 2020 last date of submission that form well  2nd week of April 2020 .. issue of admit card will first week of May 2020 and BHU examination on 3rd week of May 2020..

For more information go through this link:

https://law.careers360.com/articles/bhu-llb

All the best!!