In regards to benefits. Do you cover items purchased with Apple Card from being stolen?

This is primarily a user-to-user support forum; other Apple users like you. I'm not aware of any theft protection related to Apple Card purchases but you may want to check their customer agreement: https://www.goldmansachs.com/terms-and-conditions/Apple-Card-Customer-Agreement.pdf

or contact support for Apple Card: https://www.apple.com/apple-card/how-to/#film-get-support

There is this link as well - https://www.mastercard.com/apple-card-mastercard-benefits.html