How do i add c++ scripts onto a blueprint project? the project adds the c++ script but i cant see it in the editor or in any files, what do i do?

please help

C++ scripts should be placed in the Source Folder. You will not see this in the UE4 editor unless you enable Content Browser → View Options → C++ classes. This will just list the classes, but not allow you to edit them.

To edit the cpp/h files, use Visual Studio (or XCode on OSX): Setting Up Visual Studio for Unreal Engine | Unreal Engine Documentation