I modeled some buildings using Unreal Engine in Fortnite and I want to export them to Blender so I can edit the textures before importing them back into Unreal Engine in Fortnite. How can I do this?

I modeled some buildings using Unreal Engine in Fortnite and I want to export them to Blender so I can edit the textures before importing them back into Unreal Engine in Fortnite. How can I do this?

You could export them from blender to some universal 3d model file that UEFN supports (eg .fbx) and import that into UEFN,
Or if you wish to skip blender altoghether you can directly migrate an asset from UE to UEFN by using the migrate option and selecting the content folder of your project