How to implement share labels google maps in facebook?

Question

Google

Good evening!
There is a site with a google map, when you click on the map, a label is placed and the share button is activated, when you click on the share button, you need to share the map label in the facebook user's timeline.
I can’t find a way to share a label on facebook, you can throw a short link to the map and then everything works, but how to create this link on your site? Please tell me how to implement it or poke a link.
Thanks in advance.