I just bought a ticket for my friend will i receive points on my air india maharaja club account?
No, you can only earn Maharaja Points for bookings made in your name.
No, you won’t earn Maharaja (Flying Returns) points if the ticket was booked for someone else, even if you paid for it.
Air India awards points to the passenger who travels, not the person who makes the booking or payment. So your friend will earn the miles if their Flying Returns number was added to the booking.
If you travel together in the future, make sure your own frequent flyer number is added to your ticket so you can earn the points.