Unfortunately I am a huge dummy and the game launched without the all important leaderboard not ready from the get go.
Just giving everyone a heads up that as of earlier today, it is now visible. Your scores had been saving this whole time, you had just not been able to see any of them because I was supposed to set community names to each.
Also, I had something set up backwards, and basically, players who were playing the game for about the first hour of release may have scores on the leaderboard that are lower than that of their save file. If this happened to you, this can be fixed simply by entering that stage and then leaving; your high score should immediately upload and be proper this time.
Many apologies for the inconvenience, please give me a heads up if there are further issues and I will work them out as soon as possible. Big thank you to everyone for playing!