Can I swap iPhones screen with another?

I have an iPhone 4 and the screen is badly cracked, I also have another iPhone 4 with water damage which can no longer be used, would I be able to swap the screens instead of paying 130$

Yes there's! If you take it to a repair shop they can probably do it for you and it would cost a lot cheaper! Or there's a iPhone 4 screen repair kit on amazon for like $40!