What is your license information? Is this only useable for 1 project or multiple?
Viewing post in PSXFX - Retro Graphics for Unreal Engine 4 & 5 comments
This asset pack is also sold on the Marketplace, so I'll link you to their license. The same applies to the Itch version.
https://marketplacehelp.epicgames.com/s/article/What-can-a-customer-do-with-my-p...