Dear Student,
As you have already completed your 12th you can definitely go for doing B. Pharma as your graduation if you're interested in it. For it you have to for entrance exam first which varies from college to college, some college also take admissions on the basis of class 12th marks. Here is the link to some entrances for B.Pharma across India :-

https://pharmacy.careers360.com/exams

Hope this might help you.