By default, all the screens in your app have the same URL, which makes it impossible to share a specific item in your app with someone.
However, if your table uses Row IDs, viewing a details screen will update the current URL, which is available as a value called Link to current screen.
You can Copy this link to the clipboard, send it to Zapier, or use the Share action to let your users easily share items in your app any way they'd like.
Your Google Sheet needs a Row ID column for Deep Links to work.