It sounds like you're asking how to wake or activate your Apple Watch screen, not physically rotate it. Here's how:
Waking Your Apple Watch Screen
You can activate your Apple Watch screen in the following ways:
- Tap the display: A simple tap will often wake the screen.
- Press the Digital Crown: Pressing the Digital Crown will also wake the screen.
- Turn the Digital Crown upward: Rotating the Digital Crown upwards can also activate the screen. This is useful for gradually increasing the brightness or revealing more content.