On Pixel 3 or higher phone and some other Android phones you can add a boarding pass to the Google Pay wallet by taking a screenshot of the boarding pass. Once you take the screenshot it will be recognized as a boarding pass and an option to add it to your wallet will appear.
5 points in two minutes! That's impressive. And not even on the Show page? Hmm, what gives? My post also got 4 points in 1 hour, and didn't get on Show page.