heavy bough
Couldn't find a good place to discuss this topic, and it's a big one. Unless #umg is the right place?
Some resources I found:
https://docs.unrealengine.com/4.27/en-US/ProductionPipelines/Localization/
https://dev.epicgames.com/community/learning/tutorials/zwPJ/unreal-engine-localization-in-depth
https://benui.ca/unreal/#text--localization