Greetings aksha!

No you don't have to fill form for NLUs separately, there is only one common form i.e. clat entrance exam registration form which you will have to fill. As you must already be aware, that CLAT is the common entrance exam to get admission into 22 different NLUs all over India. However their are 23 NLUs in total. admission into national law University delhi is based on its own entrance exam called AILET.

Reservation in these entrance exam is offered to below categories :- SC/ST, PWD, state quota for the candidate in which NLU is located, obc, kashmiri migrants, candidates belonging to north east.

Here's a link to an article to help you further. https://law.careers360.com/exams/clat

Hope it helps.

Thankyou!