Hi aspirant

The counselling will after the official announcement of JEE mains rank card.

So you need to wait upto 30 april.

After that you can check the official website of BCECE where you can find counselling notice based on JEE mains and you can apply there.

Official website of BCECE : https://bceceboard.bihar.gov.in/

Know more about the procedure this year: https://engineering.careers360.com/articles/btech-admissions-for-other-state-candidates

You can check list of engineering colleges in bihar: https://engineering.careers360.com/colleges/list-of-engineering-colleges-in-India?f%5B0%5D=sm_college_course_level%3AUG&f%5B1%5D=sm_quali_exam%3ABCECE&sort_filter=parameter

Hope this was helpful.