I'm not sure but the score probably saved. I remember the first time I FCed I want to be a machine was on multiplayer and when I went back to singleplayer it showed that I had FCed it. I have also gotten my first SS on some songs in multiplayer and it saved in singleplayer, so I would assume it saves your score as well, so it would be worth checking.
bro i finally beat it also i got so many attempts on it like hundred or hundred fifteen and i could only do it hitless after GOD DAMN THOUSAND ATTEMPTS!