Apple watch notification are not working or delayed notifications, getting notifications on vibrate mode only or when using phone or apple watch notifications not working after update then by following methods you can fix issues with apple watch notifications.
Turn off do not disturb
Make sure Allow Notifications option is enabled
Turn off cover to Mute
Turn off/on Bluetooth
Turn off Wrist Deduction
If Apple watch notifications are not working then you can fix by Turn off do not disturb, Make sure Allow Notifications option is enabled, Turn off cover to Mute, Turn off/on Bluetooth, Turn off Wrist Deduction