In other words, there is no way to get free items and costumes in Fortnite through using Fortnite Hacks or anything else at the moment.
There are no Fortnite Cheat Codes available right now on the internet, however, there is a known software called 'FortNitemare' that lets you get all the challenges unlocked for 9.99$, but it is not advised to use it as it is extremely not safe. You can browse our website's Fortnite section to know more about the Legit Fortnite Hacks available. What is the advantage of using Fortnite Hacks?