how do i get a refund sent back to my apple id?

The refund will go to the payment method used when making the purchase,

Normally, all sales are considered final, but you can ask for a refund.

If you have received a confirmation email, click the Report a problem link at the bottom.

Purchases problem.      

How long refunds from the App Store or other Apple services take.  

See here: link-> Request a refund for apps or content that you bought from Apple - Apple Support