How do I report a lost card

For information about reporting a lost Apple Card, see the following from: Lock or unlock Apple Card - Apple Support

If your titanium Apple Card is lost or stolen

First, lock your titanium Apple Card. Then use your iPhone or iPad to request a replacement card.

If your iPhone and titanium Apple Card are both missing or stolen:

1. Call Goldman Sachs for a replacement Apple Card at (877) 255-5923.
2. Then locate your missing iPhone with Find My and protect your information.

my card was stolen

I lost my Apple Card