Hey.
For admission in BA/BCOM LLB in PU, 50% weightage will be given to boards exam percentage and the 50% weightage to Entrance exams result.
As per previous year trends if a student scores around 85- 90+ marks in boards you should try to score 65+  in the entrances for a fair chance of admission here.
As the marks required in entrance will matter a lot too and it might change this year due to factors like level of difficulty of paper or level of competition. Previous year trends vary a lot too. Prepare well for your entrance. Let me know your boards marks for a more accurate estimate of marks required in entrance.
Best of luck.