One of the features of Unreal Engine is the ability to visualize the light attenuation radius of point lights, spot lights and Rect Lighst in the editor. This can help you adjust the lighting parameters and optimize the performance of your scene.
https://dev.epicgames.com/community/learning/tutorials/34jm/how-to-visualize-the-light-attenuation-radius-in-unreal-engine-5-3