Hey there, I downloaded and tried to play your game but unfortunately I cannot progress beyond the Menu Screen.
When I click on any of these options, nothing occurs. In Unity, you usually have to set up OnClick() events for your buttons in the Inspector to call SceneManagement to advance to the next scene. Happy to try your build again if you want to attempt to upload a hotfix, which is explicitly allowed in the Jam's rules.
I also noticed that your file structure looks a little odd:
Not sure what happened here, but I'll just say that best practice is to make a new folder for each Build. Keep trying, I'm sure you can get a playable version uploaded in the next days before the Jam rating period ends!