Hi, tried to play your game on my livestream, loved the concept but struggled to get the game to perform as expected and had to stop the streamto avoid causing any epileptics to struggle. I probably did something wrong, but please let me know I'd love to give this game a proper chance.
%APPDATA% is a reference to a hidden folder in your user profile (it’s a Windows variable that expands to <your_user_profile>\AppData\Roaming, where <your_user_profile> is usually something like C:\Users\Waluigi). If you hit Windows-key+R, you’ll get a “Run” window, and if you open %APPDATA%\Godot\app_userdata\Grunk verbatim, you should go straight to the folder. You can also just paste that string to the location/URL bar in a file explorer window.
(For MacOS, you can find it here instead: ~/Library/Application Support/Godot/, and for Linux, ~/.local/share/Godot or ~/.config/Godot.)