Hi
Apple advises that you should not continue using a damaged Apple Watch.
Apple does not offer a screen repair or screen replacement service for Apple Watch and Apple Watch is not user-serviceable.
If the issue is not covered under warranty or other Apple policy (be sure to ask), then your Apple Watch may be eligible for replacement via chargeable, out-of-warranty service - or via AppleCare+, if previously purchased.
Contact Apple Support (mail-in service may be available, if required), make a Genius Bar reservation or visit an Apple Authorised Service Provider to arrange for your Apple Watch to be inspected and to establish your available service options:
- US: Apple Watch Service Answer Center - Apple Support
- Elsewhere: Select your country for Apple Watch service and repair information
I'm afraid that no-one here can ell you what Apple will decide in your specific case. You are not talking to Apple here - this is a user-based technical support community.