My Apple Watch won’t swipe up

Try resetting the Watch. Press and Hold the Digital Crown and the power button together until you see the Apple logo and release. After the Watch reboots, try to swipe up the screen. Is swiping up the screen the only issue that you are experiencing?

You're welcome. I also read an article last night indicating this problem has cropped up more frequently lately. One of the "tricks" that seemed to resolve it besides this reset was to change the watch face. Since most users have more than one face setup for their watches, they could swipe side to side to change and try swiping up from a different face. That corrected the issue for many.