Not the round, rotating Digital Crown.
And I'm assuming you are on watchOS 10.
Momentarily press and release the flat oval side button
https://support.apple.com/guide/watch/control-center-apd06bc15da1/watchos
watchOS 10 features and changes
https://support.apple.com/guide/watch/whats-new-apdb93ea3872/watchos
NOTE: If you are on watchOS 9 or earlier, then Control Center is a swipe up from the bottom edge of the Apple Watch face (assuming your orientation is visually correct; some users actually have the orientation reversed, and for them it is a swipe down). But swiping to access controls is no longer the method on watchOS 10.