With the score you're mentioning you'll get a rank somewhere between 15000-16500. And even if you fall in OBC category and you have the state domicile you won't get into CNLU Patna. In fact chances of getting an NLU are bleak. But there's nothing to worry. So many good colleges are out there and you can check them out since you've a decent score.

To check out the colleges you may be getting with your rank you can use the following link

https://law.careers360.com/clat-college-predictor

All the very best