Series 3 watch with os 7 insufficient memory with no added apps

Hello Markl536,

Thanks for that info and for choosing the Apple Support Communities. If we understand correctly, you are unable to update your Apple Watch, as you see a message about storage. To help with this, please make sure you are following the steps in this Apple resource and then contact Apple directly if you need any further assistance.

If you don’t have enough space to update your Apple Watch

Get Support 

Cheers!