Want to get a refund, how do I

[babens]

got a refund on the item today at my local apple store, how long will it take until its back in my account?

That's typically up to your credit card/bank and how fast they process refunds. Depending on the method of payment it could potentially take up to 10 business days

 

[12vElectronics]

Usually 3-4 business days here in the USA.

 

[kiwipeso1]

Usually 3-4 business days here in the USA.

And for some strange reason which always escapes the Americans here, the OP is not in the USA, she is in the UK.
In related news, other countries have different laws regarding refunds, and may take a different amount of time to make a bank deposit.
However, it is true that, yes the UK is backwards in payment times and takes more than the same business day to process if the bank workers are down at the pub when you make the deposit, ie. after 6:30PM.
(After 10PM transfers in NZ is next business day.)

 

[Icehawk]

got a refund on the item today at my local apple store, how long will it take until its back in my account?

I've seen some take 5-10 business days. Normally happens faster, but it depends on their processor, type of payment, and stuff. May be able to see something as pending right now or by Wednesday.

The store may have a better idea, but 5-10 business days is a safe bet.

 

[FreakinEurekan]

I rang up apple and they said as I have unsealed it I cant get a refund, does this sound right to you?

You probably irritated them by asking too many questions.