Begin by opening your article that you wish to get a preview link for.
On the top right bar, hit "Preview", which will take you to a preview page. Note: You can switch views from Mobile to Desktop with the icons on the top right page.
Next to the word "Preview", is a hyperlink icon. Click that icon to copy your preview link to your clipboard. From there you can share preview links to people without Copilot logins.
Warning: These links can be viewed without a Copilot login. Be careful who you share links with outside the organization.