Colleges in Kolkata

You need to have 50% and above for admission in this college and course.

You need to have 12th from a recognized board with minimum 50% marks.

In Kolkata the list of top 10 college are:-
Jadavpur University
IEM
Heritage
Techno India Salt Lake
St. Thomas
RCCIT
Techno Rajarhat
BPPIMT.

Chennai is better.for its placements although you should also have a good rank

Jadavpur University is a State University of West Bengal and thus the admission is done through WBJEE, Jadavpur University doesn't take admissions through JEE Mains.
So, if you want to get into Jadavpur University, first sit for WBJEE.
To get into JU, you need to get a rank under 1500, if you are going for Electronics, CSE, Mechanical, Civil, Instrumentation etc., then you need a very decent score, your rank should be under 600700. But, if you want to get in IT, Power, Printing, Construction –etc, then scoring under 12001500 will be enough.

I am not really sure that you would be granted admission in this course after such a long gap. However, to apply for this course you need to have passed 10+2 or its equivalent with special aptitude in dance.
I would request you to contact the college officials once for clarity about applying.
Link: http://rbu.ac.in/

https://www.shiksha.com/b-tech/resources/wbjee-college-predictor
Please go to the college predictor link, I am sharing here to know about the college you can get.
Good luck.

No, the cutoff in Jadavpur is 200 for OBC.