how do i share files between pc's?

See the articles Set up and use iCloud for Windows - Apple Support

Share files and folders in iCloud Drive on iCloud.com - Apple Support

Share iCloud Drive files and folders in iCloud for Windows - Apple Support

Of course. Either at iCloud.com or by setting up iCloud for Windows on each device.

Papajimmc Said:

"how do i share files between pc's?: Can I access my icloud files from multiple PC's?"

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What happens when you try? Any errors?

Yes. you can access your files through iCloud.com or using the iCloud windows app.