there are so many colleges in west bengal like

BC roy college of pharmacy and allied health sciences 

BCDA college of pharmacy and technology

bengal institute of pharmaceutical science and so on.

you can apply through WBJEE to enter the colleges for B pharm and that on the cut off list generated afterwards.

check the link 

https://pharmacy.careers360.com/colleges/list-of-government-pharmacy-colleges-in-west-bengal

all the best