The easiest is to download the prebuilt:
https://www.unrealengine.com/en-US/linux
Or you start reading documentation from here:
You can also ask chatgpt or any ai for detail instructions… 
The easiest is to download the prebuilt:
https://www.unrealengine.com/en-US/linux
Or you start reading documentation from here:
You can also ask chatgpt or any ai for detail instructions…