Get a replacement for a lost or stolen Mac

If you're referring to AppleCare+ Loss and Theft, this only applies to iPhone. See AppleCare Products - iPhone - Apple. AppleCare for Mac does not offer such features. See AppleCare Products - Mac - Apple. Sorry if you lost your Mac.

You submit a claim to your homeowners or renters insurance policy. If covered, a deductible may apply.

https://www.policygenius.com/homeowners-insurance/how-to-file-a-homeowners-insurance-claim/