I played again, lots of geese yay. I pressed your fullscreen button and it was like the camera zoomed right in and I could only see part of the game screen and at the end the Reset button was covering the Final Score label so I couldn't tell if the score was showing or not. This is what it looked like when I pressed the itch fullscreen button. I tried this on two browsers, Firefox and Chromium, both on Linux and got the same results.
Then I played using the browser fullscreen function (F11) and saw this at the end..