I got...

11130 points. But then I got bored...

Not bad

Not a bad idea and use of the games factory tutorial but you might want to put in a value for limiting the # of bullets that can be fired at once. It is very easy to get a highscore by just holding the mouse buttn down and waving the mouse up and down vertically.

Needs work

You were certainly right about the audio. Man, that was something else...
The gameplay itself works, but it's just too simplistic. I think you need to start learning some proper AS rather than keep using The Games Factory, otherwise your games just won't progress. It's helped you get started, now it's up to you to make sure you don't get stuck there.