How to use titanium card at store or restaurant

You use it like a normal credit card; swipe or chip (1% cash back). You can also use your Apple Pay Apple Card at any place that accepts contactless payment for 2% cash back.

Hello ~ Take a l here and you can use it just as you would any other physical credit card:

How to make purchases with Apple Card - Apple Support

~Katana-San~

If you want to use your physical Apple Titanium Card at stores you can use it just like you would be using your normal credit/debit card.