Hi
Whether or not it is worth paying for service compared with disposing of your damaged Apple Watch (it can be returned to any Apple Store for recycling) and/or buying a new model instead a matter for you to decide.
Apple advises that you should not continue using a damaged Apple Watch:
I suggest that you 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, timescales and cost:
- US: Apple Watch Service Answer Center - Apple Support
- Elsewhere: Select your country for Apple Watch service and repair information
Out-of-warranty repair service prices vary, depending on your location and model. Prices in the US, for example, are available here: