Accidental damage such as a cracked screen isn't included in the standard Surface warranty. Your repair or replacement options will depend on whether you have Microsoft Complete, which is the extended protection plan. If you're enrolled in Microsoft Complete, accidental damage is covered, though you'll typically need to pay a deductible. Without that coverage, you'll have to pay the full cost of an out-of-warranty repair or replacement.
if the device was purchased from the retailer or Microsoft Store, they can sometimes arrange direct replacement.
Kindly go through the following Microsoft reference article for further help and assistance:
Microsoft Complete for Surface: Accident Protection Claims Process