As you've mentioned your category, I'll assume you to be from general unreserved category and based upon that I'll tell you the answers..

So governmenet medical college Dilbugarh had a cutoff of 427 marks for the state category students equivalent to an AIQ of 58274 rank.

The highest cutoff was in Guawahati Medical College which was 477 marks (30840 AIQ rank) and the least was 420 marks in Tezpur Medical College equivalent to rank of 62580.

Kindly refer to the link below to enhance your knowledge regarding cutoffs of medical colleges in Assam -

https://medicine.careers360.com/articles/neet-cutoff-assam

Best wishes. Thank you.