I have not received a refund after it’s been approved. It’s been like 2-3 days how long does it normally take?

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

"When will I get the money back?

If your refund is approved, the funds are applied to the same payment method that you used to buy the item. Here's how long it takes for a refund to appear on your account or statement:

Store credit—It might take up to 48 hours to see the refund in your Apple ID balance.

Mobile phone billing—It might take up to 60 days for the statement to show the refund. Processing time might be affected by your carrier. You can contact your carrier for an update.

All other payment methods—It might take up to 30 days for the statement to show the refund. If you don't see the refund after 30 days, contact your financial institution."

After you request a refund you'll receive a status update by email within 48 hours. If your request is granted, the money is returned to the payment method you used. The time it takes for the money to appear on your account or statement depends on the payment method:

- Store credit (e.g., Apple ID balance): up to 48 hours

- Mobile phone billing (payment through your phone service carrier): Up to 60 days

- Other payment methods (e.g., credit/debit card): Up to 30 days for it to appear on a statement.

For apps and media you can also sign into https://reportaproblem.apple.com to check if the status of your item is "Refunded".

From: 'Check the status of a refund for apps or content that you bought from Apple' --> https://support.apple.com/HT210904

If you need to contact Apple about this, click on this link --> https://support.apple.com/choose-country-region/ and choose a path that gets assistance from Apple staff.

"and some fell on stony ground." :-(