how to work on DILR section as i gave 2-3 mocks and in all of them i was unable to solve any ques like i started the set but couldn't complete any of the sets.

Focus on solving more sets. Solve 3-4 sets every day. Keep trying to solve sets even if the timer runs out. LRDI takes time and since there are no predefined methods or formulae involved like Quant, all you can do is practice more and more untill you start observing patterns in the different types of questions. Once that happens you will be able to solve questions quicker than before.