When you start the game, click the green flag TWICE. For the best gameplay, when it asks you whether you want to skip the tutorial or not, click no. There is sound. The microphone button at the bottom will mute. When buying upgrades, click on the photo, not the words. All the scripts in Robot have a comment explaining their purpose.
This is my first project on Scratch! Go to this link to see my second. https://scratch.mit.edu/projects/952342020/ Also, sdfdsgfxg has the high score!