Hi there, Luisykrist.
From your photo, it appears that too many passcode attempts were made and now that Apple Watch needs to be reset and paired again.
The steps below can help show you how to reset your Apple Watch:
"How to reset your Apple Watch if you forgot your passcode
- Put your watch on its charger and keep it there until you complete these steps.
- Press and hold the side button until you see Power Off.
- Press and hold the Digital Crown until you see Erase all content and settings.
- Tap Reset, then tap Reset again to confirm.
- Wait for the process to finish, then set up your Apple Watch again. When asked, restore from a backup.
Erasing all content and settings erases all media, data, and settings from your Apple Watch, but it does not remove Activation Lock. To remove Activation Lock, unpair the watch first. Before your watch is erased, a backup of its contents is created on your iPhone."
That information is from this article: If you forgot your Apple Watch passcode - Apple Support If you have the iPhone that is paired to your Apple Watch, that article also has steps on how to use your iPhone to reset your Apple Watch.
Take care!