To share your MuseScore creation with someone who's not on MuseScore, go to the score page on MuseScore.com and click the big "Share" button on the right (or below the score on mobile). This will give you:
- Buttons to post the score directly to your social media account(s): Facebook, Google Plus, Pinterest, Tumblr, or Twitter.
- The page's URL, which you can copy and paste into a message.
- Embed code, so you can make the score actually appear and play in the middle of your blog or web page.
If you click the share button on one of your own private scores, the URL you are offered (and which is used in the embed code and passed to the social media buttons) is a "secret link" that will allow people to view your score even though it is private. You also have the option to "Reset the secret link," which will make an earlier secret link no longer work.
If you are viewing someone else's private score—either because they shared a secret link with you, or added the score to a group you are a member of—there is no Share button.