How do I save my iTunes library in the iCloud?

Hi nancyfromtallahassee,

Welcome to the Apple Community, where some of us do our best to help each other :)

Apple Support have articles online to help you.:

Set up your Apple ID iCloud settings on Mac:

https://support.apple.com/en-au/guide/mac-help/mchlcfdfc3a5/mac

Set up iCloud features on Mac

https://support.apple.com/en-au/guide/mac-help/mh36834/11.0/mac/11.0

and

Manage your iCloud storage.      

https://support.apple.com/en-us/HT204247

Hope this helps you :)

Hi,

To use iCloud music library you need to subscribe to iTunes Match or Apple Music. You don’t use iCloud storage for music.

Jim