Want to make your Unreal Engine 5 scenes glow with stunning emissive effects? In this tutorial, you’ll learn everything you need to know about creating emissive materials in Unreal Engine 5 — from simple glowing surfaces to advanced texture-based emissive materials that can actually light up your environment.
https://dev.epicgames.com/community/learning/tutorials/55kp/fab-emissive-material-in-unreal-engine-5-6