Thanks for reaching out about this here in the Community.
With the Spotify desktop app, you can open your Liked Songs and select multiple ones at the same time (Ctrl/Cmd+click every song you'd like to select) and drag them to an already existing playlist you created or right-click the selected songs > Add to Playlist > New Playlist if you'd like to create a different playlist out of them.
Hope you'll find this info useful. Let us know if there's anything else we can help with!
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