I would like to make games does this mean i cant even like give the games to my friends? do i have to buy the lisense to give it free?

What commercial use means in the simplest and broadest sense in this context being a game for making a profit or getting money from it in any way.

As you can see with their TOS, if you're going to make a commercial game using their engine, they want you to at least get the licensing for it being for about $80. Allowing you to make as many games with their engine as you'd want. This isn't too uncommon within the game industry as with many industry games there's an engine that all games are built off from, and sometimes the game company makes the engine from scratch and from the ground up or may get a license to use the software for the game's release. This is very common for games within the 3D genre as lighting engines which are crucial for game rendering and graphics as a whole. Companies can and will take at times a full decade to get something fully complete and fully done in a means where it's also able to be used within a game's setting and compatible with the coding itself. Hopefully that helps answer your question and gives some insight on what this is for and what the developers mean by what they say.

And if you're still concerned, "As long as you don't have any profit with your games, you can use RPG Paper Maker freely!"

meaning that as long as your games are for free, you're more than within your right to share your games with your friends. But if you're making a profit in any way, be sure to get the licensing in order to do so.  So no, you don't have to give them $80 to share your games with your friends. Only if you're intending to sell them to your friends you have to.