Unpaired locked apple watch

Greetings, ArianaB055.

I see that you're unable to reset your Apple Watch after forgetting the passcode. When you firmly press on the Power Off slider, the Apple Watch simply turns off. I'm happy to help.

If you forgot your Apple Watch passcode -- After firmly pressing the Power Off slider, lift your finger to see the menu.

"Use your Apple Watch

If you don't have your paired iPhone, you can still remove the passcode from your Apple Watch.

1. Keep your watch on its charger until you complete these steps.
2. Press and hold the side button until you see Power Off.
3. Firmly press the Power Off slider, then lift your finger. 
4. Tap Erase all content and settings.
5. Wait for the process to finish, then set up your Apple Watch again. When asked, restore from a backup."

Take care!

Every place I’ve seen these instructions is missing one important step. I figured it it through experimenting. The watch needs to be in the charger but it needs to be held in the standard, portrait direction as if it were on your arm. If it is showing the clock sideways, the power off button will not display. The clock needs to be in portrait mode to get the slider to appear. Once that happens, you will get the prompts as suggested in the steps.

this was tested with an Apple Watch 4.

Thank you for getting back to us with that information, ArianaB055. It's appreciated. Since the Power Off slider never appears, its time to contact Apple Support.

Apple - Support - Product Selection --  Apple Support will be able to troubleshoot this issue with you further.

Cheers!