It's only allowed to complete the race two times. Your final score when you have completed the race twice, is the score that counts.
Free choice of what level you want to start playing on.
The last screen completed is what counts in this game. Enter that into the Stages box on the Submit page. As many players will complete the same number of screens, the second sorting factor is the time it took to complete those screens. The length of the recording is from when you press 'S' to start the game, until it has finished playing the congratulations melody on the last screen you completed.
Free choice if you want to play on Slow, Normal or Fast.