How would I go about making an old FF style RPG?

This is something I would like to do, but I’m new to game development and have no idea where to start.

The end goal would be to have a top down 2D overworld to explore, with a 2D side view for battles.

Would someone please be able to tell me where I should even begin with this?

Try downloading and picking apart the “Tappy Chicken” demo game on the Unreal Marketplace.
It shows you many useful mechanisms for a 2D based game.