In the Studio Editor
Select your track from the My projects page and click on Edit.
Make sure that the all audio clips are generated (see📄 Generate audio for speech)
Then go to the top right corner of the page and follow Export > Public view link > Create public view link.
Your audio track is shared to the link provided here.
From the 'My projects' dashboard
Single-left click on any track and you'll see the right hand side panel open
Click on 'Export' > 'Public view link' > 'Create public view link'
It will create the same shareable link as above