How install Fortnite on windows 10?

First Thx for making it free.
i dont know exactly how to download fortnite and i wanted to get help from u not from YT

i want to download fortnite i am doing everything but it’s not working pls help me to download it.

When I try to download it, it a says: Error app not found

This website is for UE4 developers to get assistance with game and engine development.

For issues with Fortnite (such as crashes or account issues) visit the troubleshooting site [Fortnite Help][1]. If you aren’t able to fix the issue you can contact Epic support using the [Contact Us][2] form and they will reply back to you by email, or you can try posting on the [Fortnite Forums][3].

Thank you