Due to RBI regulations Payment through Wearables isn't available in
India yet. That's why Samsung Pay isn't available on Galaxy Watches. I
hope you got your answer and don't forget to accept solution so as to
help others too. Thank you.
That option only comes if you already have Game Launcher.Upon opening
the Game, the option you looking for, either comes in the navigation bar
(when using navigation buttons) or in the notification panel (when using