how much i want to minimum score for top ten iits (OBC) same que for nit top ten please ans bcz i want to know my goal main if adv pz

To get CSE branch in top NITs you should score more than 250 marks in JEE Main.

JEE Advanced maximum are not defined :

Maximum Marks vary every year like below:

2017- 366
2016- 372
2015 - 504
2014 - 360

So, it is difficult to predict marks as exam pattern and marks change every year but you should score more than 50% marks to get good branch in Top IITs

All the Best!!