Q: After authorizing new Laptop with Windows 10 my purchased songs are there but my Playlists are not.  How do I find them?

Hi ClassicCyn,

Thanks for using the Apple Support Communities! I'm sorry to hear you are having these issues with iTunes. I'm a bit unclear on your exact configuration, but if you were moving your iTunes Library (including playlists) from an older computer to your new computer, you may want to double-check that you followed the process outlined in the following article:

How to move your iTunes library to a new computer - Apple Support

Regards