You can right click on your playlist and select "Make Public" and then have friends/family go to your Spotify profile and follow you. Your public playlists will show up on your profile so they can see the playlists. There is also a share option in the right click menu to send to a user as a message.
Or, without making the playlist public so it shows on your profile, you can right click on your playlist and select "Copy Playlist Link" and then send that link to them. Then they can use the link to open the playlist in the Spotify app.
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