What should I pursue after +2 to become a pilot?

You should know the basics of aircraft after your +2 which will help you further. So, you better prefer aeronautical engineering after +2 or you can also join a Diploma course.

they have pilot course better you can join that

There are some special courses for becoming a pilot in aviation or aerospace sector apart from engineering. Many institutes are there in India which provides Diploma for becoming a pilot.