Ok I know this might sound like a dumb question, but when you to call a shape like (GL_Quad) can it work? Yes I know I need the other components, but does the language support it?

No. Very much No.

Okay do you have any advice where I could do to make shapes? Thanks.

You would essentially create a Mesh Component which gets attached to an Actor and behaves similarly to Static Mesh Component and Skeletal Mesh Component. There of course exists a Blueprints version, too.

It may be better to see if Skeletal Mesh Component or Static Mesh Component are able to do what you need.

Thanks this will come in handy.