So you’ve exported your 3ds Max scene with Datasmith — but what’s next? 
In this Day 3 beginner tutorial, you’ll learn how to correctly import your Datasmith file into Unreal Engine 5 and set up professional lighting for realistic Architectural Visualization.
We’ll go step-by-step through the import process, organize your scene for efficiency, and build beautiful, natural lighting using Unreal’s powerful Lumen system — setting the stage for materials and rendering in the next video.
https://dev.epicgames.com/community/learning/tutorials/DW8e/fab-unreal-engine-5-architectural-visualization-importing-datasmith-files-setting-up-lighting