It's been over a week now since i ordered my statement of marks and i still haven't got it. Has something stuffed up?
LOL. Yeah, generally it takes 3-4 days... if you pay by credit card. I honestly don't know why it hasn't come yet... don't worry, didn't you get an A+ anyway?... what's there to worry?
... unless you want to find your exact score out of 90... 
I'm still waiting on mine as well. I sent in the form (payment via credit card) last Friday. Still waiting...
LOL... now that I don't know why. the letter should have been sent to you by now... :S you could trying calling the VCAA...? the Statement of Marks came with their telephone number if you wanna call them.
(+61 9651 4300) I don't know if this helps you, but you may as well call if you really wanna see what has happened to your Statement of Marks [letter]...