I have got 148 score in JEE Mains. What are my chances to get admission for B.Tech in computer science?

Dear, It's hard to tell. Kindly visit the link mentioned below to get the perfect result: https://www.shiksha.com/b-tech/resources/jee-main-rank-predictor

You can put your score here in this link and find out the possibilities of getting a good college: https://www.shiksha.com/b-tech/resources/jee-main-rank-predictor

First of all, do you belong to a reserved category? If yes, there's a chance. If you are SC or ST candidate, you will get good NITs or IIITs for B.Tech CSE. If you belong to SC category, you will get B.Tech CSE in NITs like Tadepalligudem, Puducherry, etc. Use our seat predictor link for that.