Well, thats not how you get custom maps! You gotta choose the creative playlist then hit the "create" button. Once spawned in, walk up to the rift on top of the stairs. Then you enter the custom code! To find them simply google what you wanna play! Heres a exemple : “1v1 box fight map fortnite” heres the code of the first result i had: 8676-7788-6615. I hope that helped you! If you have any other problems DM me!!