Hii Ritu!
Some of the best colleges providing computer science courses as b.tech or engineering courses are -
* Symbiosis institute of technology, pune
* Bharati Vidyapeeth deemed university college of engineering, pune
* IIT Bombay
* College of engineering, pune
*Army institute of technology, pune
Etc., The link mentioned below may help you with the same -
https://engineering.careers360.com/colleges/list-of-computer-science-engineering-colleges-in-maharashtra
Hope this helps.
Good luck!