Create a page to display an individual post. Call it /post or something else. Set the data for that page to Post. Now when you send any Post to that page to be shown, you can see that the url looks like /post/[post’s uid]
This, you can build the Url for any post: your domain.com/post/[selected post’s uid] There is a free plugin that you can use to let the user copy that built url to clipboard when they tap an icon or button (search the Bubble marketplace for copy or clipboard)