You can share a link to a published post. To do that:
1- Open your Social media section and click on Publishing.
2- Choose the post you would like to share and click on the three dots button in the upper right corner.
3- The drop-down list will be shown. Choose the Share button by clicking on it.
4- Now you just need to copy the link by clicking on the "copy" button and send it to whoever you want.