Information here applies to all versions of the Apple Watch.
None of the steps required to manage notifications on your Apple Watch occur on the watch.
Instead, all notification parameters are handled on the iPhone in the Watch app.

Open theApple Watchapp on your iPhone.
Turn on theNotifications Indicatorby moving the toggle to the On/green position.
EnableNotification Privacyby moving the toggle to the On/green position if you’re privacy-conscious.

By default, the Apple Watch displays the full text of notifications.
For example, if you receive a text message, the content of the message displays right away.
With Notification Privacy enabled, you tap the alert to display the text.
These are the apps that come with the Watch, which you’re free to’t delete.
In this example, we’ll use Calendar.
For most apps, there are two controls options:Mirror my iPhoneorCustom.
Some built-in apps, like Calendar, offer several tweaks.
Others, such as Photos, offer only a couple of choices.
Most apps offer aNotifications Offsetting if you want to turn off notifications.
The more apps you move to the Off/white position, the fewer notifications you receive on the Apple Watch.
With the Apple Watch, all you oughta do is glance at your wrist.
Otherwise, you’ve got the option to focus on whatever else you oughta do.
You’ll still get these notifications on the iPhone if you have iPhone notifications set up.
There are severalfixes to try when you’re not receiving text notifications on your Apple Watch.
At the top of the Notification Center, tapClear All.