Hi Anu Radha.
Delhi University does not offer any UG course in law.
It only offers a 3 year LLB programme. There is no 5 year Programme.
For the three year Programme in DU you need to have an Undergraduate Degree from any recognised university or equivalent. So,  if you od not have such undergraduate degree you cannot fill the form for DULLB as you are ineligible.
But if you have already completed you undergraduate programme you can use the link below to fill the form-DULLB

Common Law Admission Test

Application | Eligibility | Exam Pattern | Admit Card | Preparation Tips | Result | Answer Key | Accepting Colleges

Get Updates Brochure

Delhi University LLB Entrance Examination

Result | Eligibility | Application | Exam Pattern | Admit Card | Answer Key | Cutoff

Get Updates Brochure