It just takes longer to propagate the Watch Face app to play store search than the mobile apps and that is the issue. Almost every time someone says they didn’t create a “companion app” and it didn’t show up by the time they write me the watch face name I can find it.
anyway send me your watch face name and I’ll look for it on my phone.
But it you want to create a "companion app here is the LINK
Ron
Samsung Developer Relations