Thanks for reaching Microsoft Community, KrisRoux. We're sorry for what happened to your device.
You may try these tips on how to clean your Surface: Clean and care for your Surface (microsoft.com). But if issue still persists, the liquid might have penetrated to the keyboard resulting not to function as intended. You can have it checked to your third party retailer if you have warranty with them. Otherwise, kindly contact our support via Contact Us Microsoft Support to seek exchange options for your device. You can also contact them via phone, see Global Support Phone Numbers.
If this answers your question, please let our Community know by marking this post as an answer. Otherwise, don't hesitate to respond to this thread if there’s anything else that needs to be addressed.