how do I know where my refund is being sent to ?

See this Apple article: Check the status of a refund for apps or content that you bought from Apple

Check the status of a refund for apps or content that you bought from Apple – Apple Support (UK)

👉 If your refund is approved, the funds are applied to the same payment method that you used to buy the item.

Hi there!

Refunds are usually posted to the payment method you used to make the purchase.

If you have an Apple receipt for the charge that you requested a refund for, it will tell you which payment method you have used.

You can check this article as well for more info:

Check the status of a refund for apps or content that you bought from Apple - Apple Support

Hope this helps! Best of luck!