First off - very cool that you got the game uploaded to itch! Played through it a few times.
Starting out, I didn't know how to play. I did eventually realize it's the arrow keys. But maybe adding a Label just saying "use arrow keys to move" on the Title Screen would be helpful.
I noticed playing through it doesn't actually reset your score when you play again. So if I go for 30sec and click play to play again, it starts me at 30sec. Idk how you structured your game but you could probably add a quick "score = 0" to your on_play_button_pressed() function (or whatever you named the score variable and the function to start the game) - that would make sure each new run starts at zero.
Other than that feel proud because you have a working game! We still have 5 more days to work on them.