Hi adel219
Welcome to the Apple Community.
If the store gave the credit, seems your refund might take several days to appear on your card statement.
If necessary, you may need to visit / contact the store again, about your refund,
or
if the store has processed the refund ok ... check with your card-provider about the delay.
See Apple Support's article:
Get a refund for purchases made with credit or debit cards using Apple Pay - Apple Support
For the most accurate record of your transactions:
you would need to refer to the credit or debit statement(s) from your bank or card issuer.
If needed:
Apple Pay - Official Apple Support
All the best :-)