Unreal Engine primarily uses C++ for its scripting, so I would recommend checking out the course for it here on Sololearn before moving to UE. However, as scripting may be a little different from coding straight from C++ (you would need to be able to access different assets and manipulate them), you would also need to learn a bit more about scripting with C++ on UE outside of Sololearn. I would recommend checking out the documentation provided on the Unreal Engine website – https://docs.unrealengine.com/en-us/ – and maybe look for more tutorials and such on YouTube or online.

Hope this helped! d: