It'd be a great game to jump into. Don't worry, most Final Fantasy installments have nothing to do with one-another aside from lots of little franchise-wide lore staples, such as cute birds called chocobos that you can sometimes ride on and even race. That sort of thing. You're fine starting with VII!
XV will come out next year, that would also be a good starting point. None of the numbered games have anything to do with each other.
Excellent. Thanks!