If you have mention your number and email id in your form then Don't worry. They will inform you via that.

Dear Maheen,
I n A notice on http://www.du.ac.in/pginterview/LLB_LLM_Schedule.pdf it's said, "In view of the announcement of UG results, it is proposed that PG Admission portal shall be reopened for LL.B. and L.L.M. applicants. All the applicants are advised to fill the marks of their graduation/qualifying degree and XII class marks from 17 th July till 22nd July 2018, even if they have filled during the registration process. During this time applicants may also be allowed to modify their preferences of Centres filled at the time of registration. No further grievances shall be entertained regarding the same." If you have completed this then you need not do anything except waiting for the release of Admission List, first from the lot will be released on July 25, 2018. I hope it helps!