Dear Nitin,
Admission to programmes of University School of Law and Legal Studies, New Delhi are given through IPU CET Law exam. In order to gain more info about IPU CET Law follow the link. IPU CET Law 2018 notification was issued on Feb. 6, 2018 and application process ended on May 1. Exam was conducted on May 19 and results were declared on May 27, in short you have missed the opportunity for academic session 2018-19. I hope it helps.