With your graduation degree, you're eligible for three year LLB Program, not LLM.
Eligibility Criteria laid out by Delhi University regarding LLM is a candidate needs to have passed three or five year LLB degree from a recognized university .
For General Candidate, they need to have at least 50% aggregate or an equivalent grade point, for SC/ST/OBC, it's 45% and PWD category, there's also relaxation of 5% in the aggregate requirement. There's no age bar regarding this.
For more details and clarification, you may consider going through the following link-
Delhi University 2019 College Predictor
Know your admission chances in Delhi University's Science, Commerce & Arts Courses