Depending on what you bought via Google Play, refund policies are different.
Your refunds will be returned to your payment method which is used to make the original purchase. The time of refunds is differed, depending on how you paid.
You can check your refund status on your Google Pay account if your refund has taken longer than you have expected. You will see a credit on your form of payment if the status is “Refunded”. If the status is “Cancelled,” the order was never charged and so you will not see a credit on your form of payment.