Currently I do not think there are any complete game tutorials (or just complete games) written in C++ for Godot right now. Most of the C++ work in Godot is for making plugins, modules, and/or binding external libraries so they can be used with one of the scripting languages provided by Godot (GDScript, C#, etc). To the best of my knowledge, I do not think anyone is using C++ primarily for any Godot games, since it is much easier to just use GDScript/C# for the majority of the game programming work in Godot.
The answer from this Godot QA question has some links that may help you learn how to make a game with C++ in Godot.
It looks like at least one of the demos (Kinematic Character demo) linked in the QA answer could show how to use C++ in a way that is more akin to how GDScript/C# is used with Godot.
Other than the links in the QA answer, I was unable to find any material on using C++ for making games with Godot. It just seems there is not that many people using Godot and C++, or at least not that many resources on it.
Hopefully this helps :smile:
