Use the Apple support app to initiate a support call.

Ask them for an express exchange. They will put a hold on your credit card for the full amount of a new iPhone, Mail you a phone, you box up yours and mail It back.

As soon as they receive it, they will refund the hold amount.

The back glass replacement on an iPhone 14 pro max in Canada is $719 (without apple care +) or $39 (with apple care +)