The attached screenshots show where you'll see it. The pronouns might be too long for the available space, so you can always tap the grey chip to show a message at the bottom of the screen to see them (as demonstrated in the first screenshot).
If you use #Android #accessibility features like #Talkback or similar a new "Show pronouns" action has been added so you can do this too.
Pachli Current screenshot showing search results for accounts, with the pronouns of an account included in the results.
Pachli Current screenshot showing the autocomplete popup that appears when you type a handle while writing a message. One of the accounts has pronouns set, which are displayed.
Pachli Current screenshot showing the "Reply" editor, showing the pronouns of the account being replied to.
Pachli Current screenshot, showing pronouns displayed in a thread, with the popup that appears if you tap the pronouns.
