How do you mean “export”? On a technical level, the UE5 scene is just running in the background, so there’s no importing or exporting going on anywhere. You just control Unreal from within Aximmetry. 

There is a way in which we create a material inside the Unreal  put the Widget in it, paste it on an object inside BP, and then we export this BP for example to Aximmetry , 

Again, you don’t export anything to Aximmetry. That’s not how it works. 

I know that, but is it possible to do a method that is close to that?

I don't know if that's what you need! But that's how I brought animations from the widget in Aximmetry!