Apart from onboarding process or steps as suggested in Surface Portal you may contact here in X handle:
@MicrosoftHelps
You can submit a UPS damage claim directly through their website. However, because Microsoft created the UPS shipping label, they’re technically the shipper, and in most cases they’re the ones who need to file the official claim.
That said, you can still start the process yourself by opening a claim to get a claim ID. You can then share that claim ID with Microsoft support, which often helps speed things up on their end