1Password on Flathub
Flathub is the best known Flatpak package store, so it would be a good idea to public 1Password on it, and it is easier to find Flatpak apps directly from it, since users expect most Flatpak apps to be there.
Here is the guide on how to publish on Flathub: https://github.com/flathub/flathub/wiki/App-Submission
1Password Version: Not Provided
Extension Version: Not Provided
OS Version: Not Provided