How much should I score in neet 2018 for bams?

How much should score by ST category student to get bams and bhms

You didn't mention your category so I am guessing it as general. For BAMS, a score of around 350 is quite sufficient. However as a personal advise, try scoring a bit higher so that you get best BAMS colleges easily.
All the best.

The basic requirement for the eligibility to get the admission to BAMS programme is qualifying the 10+2 examination with science stream. The candidate must have the physics, chemistry and biology in 12th class. The candidate should have to go through the national level entrance examination like Neet 2018 (National Eligibility Cum Entrance Test). 300 + is enough to assure a seat in BAMS COLLEGE(GOV),as you didn't mention your category but if you are from SC or ST category then you can easily get the seat even if a score less than this.
Good luck