Hello aspirant,

For admission in BHMS course for AIQ quota in general category you must participate in Ayush NEET counselling ALL India. You can also apply for NEET AYUSH 2020 west bengal state counselling, but for that you will need WB domicile.

From previous year cutoffs, for general category  the cutoff score is 134 -710.

For, NIH kolkata the cut off was in the range of 550-670. It is also to note that, cutoffs vary every year.

https://medicine.careers360.com/articles/neet-cut-off you can go through this link for expected cutoffs.