A safe score of open merit in the general course will be more than 70% in your 12th class i.e senior secondary exams.
Also depends on which course you are selecting in general degree and what is the competition there. Since the 12th CBSE and JK board were cancelled, AICTE may come up with a different plan this time to fill the online application forms. Since most of the students will have almost the same no. of marks due to internal assessment in schools.
What do you think should be the criteria to give seats to students who have been passed internally in their 12th class.