Faceit is a Blender plugin I recently purchased. When I go to bind, it completely freezes the program. The problem may be that I sculpted and went straight to rigging. Are there too many polygons and therefore it’s freezing?
Off the top of my head, yep, you can’t rig a sculpt. That’s what retopology is for 
Normally I would ask for your computer specs but there’s not a computer in the world that can rig a high poly sculpt (and even if it could, you’ll never get good deformations with quad edge flow)