If you are looking to prepare a specific for a custom map or mod, you may be referring to:
In legitimate Fortnite gameplay, the game does not use .zip files for features. Instead, it uses: Fortnite CrackPack.zip
Could you clarify if you are trying to or build a mechanic in Fortnite Creative? *HARD* How to Create (Item Placer) Pack-A-Punch in Fortnite If you are looking to prepare a specific