If I fail the area of study can I get a band 5 or 6?
Yo! Welcome to the forums!
So pretty much AOS for year 12 is wroth 40% of your hsc mark (Modules is 60%-20% each!). So if you are absolutely bomb at the modules, then you'll be fine. Define failing, because some people i know were getting 7/15s for aos and still killed it later on!
If you're in advanced and you're failing the essay especially, then it might be good to drop to standard. Standards module essays are usually easier, by quite a bit than advanced (don't quote me 100% on that!).
But at the end of the day, if you get 7/15s in aos-meaning you get roughly 21/45 (which is still not bad!) and do pretty well on the modules then you should get some decent marks come this time next year!
All in all, no matter how much you're failing AOS, its not the end of the world! Life will go on!
Aos is not worth lots and lots of time worrying about (obiviously work at it, but dont go over the top). You'll be fine, you got this!
Keep on grinding!