Fortnite should consider adding an option to upload and save custom presets for settings such as key binds, mouse sensitivity, and controller settings. Here's my suggestion for the implementation of this feature. :
THE *BEST* Keyboard + Mouse Settings + DPI + Binds + Sensitivity (PC FORTNITE Chapter 2 Season 2) - YouTube
The Ultimate Fortnite Settings Guide for Console and PC - Kr4m
Fortnite | Recommended Settings / Controls for the PC - GameWith
Fortnite (Update) - Technical Discussion - Mouse Sensitivity Community
Best Sensitivity for Fortnite (2023 Update) - Setup.gg
NEW* Fortnite Sensitivities ADDED for Mouse & Keyboard! - YouTube