Could you please add your solution as answer and elaborate on it more? Would maybe help some guys in the future.
Well I'll try. I'm sorry I don't speak English.
Text content of the game I do not keep in scripts. For text content I use "json" files. I'm uploading them to the "Dictionary". In scripts make references.
For personal convenience, I used non-typical permissions for files with text content. This worked when launched in the editor. After exporting, the texts were empty. I don't know why. Perhaps Godot ignores non-standard file permissions when exporting.
The problem was solved when I set the files to the standard resolution "*.tres"