I really want to know

Hi Jaelyn,
In Australia, you will have to be a Permanent Australian Resident or Citizen of Australia to apply for credit.  You can't apply for credit if you live here on a visa.  Your US credit score is not used in Australia.  Your credit rating is calculated a bit differently in Australia than in the US.  From what I understand (I'm not an expert) in Australia it is more basic and looks at your income and payment history.  Late payments or no payments = bad credit.  In the US, the rating also includes if you are a 'profitable' risk (like if you carry balances over long terms, and tend to pay lots of interest-- that could actually raise your score in some cases, even if you may have delinquencies) and I don't think that is part of the rating in Australia.  Again, I'm not an expert, but I hope this helps a bit.

Good luck!