Colleges in West Bengal

It is almost impossible to get a seat in IIT Delhi in any branch after a rank of 10000. However, it may be possible in IIT Kharagpur if you have filled up for Architecture. Otherwise, it looks difficult.

IIT, Kharagpur is one of the top 6 old IITs and is very much in demand. Also, CSE is the most popular course in this time period. Hence, you need to have a rank within 500 in JEE Advanced (CRL) for getting a seat in CSE at IIT KGP.

Yes, you have a chance to get admission in NIT Durgapur.
Select the branch in which you love to work and you have very much interest in it with curiosity. Don't follow craze and popularity. Trust me, by choosing your interested field would be best for you than any other fields.

Yes, the minimum marks to qualify NEET for an OBC candidate is 118+.

You can get admission in any good private medical college with this score.

It depends on how passionate are you to become a doctor. Let's be practical, in NEET, 1.5% students get selected in government medical college and rest 98.5% students fail to qualify the exam. You can go with other courses either in the medical field or non-medical field. There are huge opportunities around you.
Good luck.

Please refer selection criteria for all three colleges in their respective websites. Usually, it changes every year and has components of your past acads, work experience, CAT score and What/PI score.