Hello Bammmk,
Thank you for using Apple Support Communities. According to this resource here: Change the audio and notification settings on your Apple Watch - Apple Support
You can still receive haptic notifications while using Silent Mode:
Mute your Apple Watch
1. Touch and hold the bottom of the watch face. Wait for Control Center to show, then swipe up.
2. Tap the Silent Mode button
. This turns on Silent Mode. You can still receive haptic notifications.
3. 
To silence an alert or notification as it sounds, rest your palm on the display for at least three seconds or until you feel a tap. If it doesn't work, make sure that the Cover to Mute setting is on: On your iPhone, open the Apple Watch app, go to the My Watch tab, then tap Sounds & Haptics.
You might have to adjust your Haptic Alerts if you don't feel them. Go to Settings > Sound & Haptics.
We hope this helps. Thank you for using Apple Support Communities. Take care.