can't open documents in iCloud drive

What are the permissions set with the document is it locked / shared by someone and has given no access permissions .

https://support.apple.com/en-in/guide/mac-help/mchlp1203/10.15/mac/10.15

https://support.apple.com/en-in/guide/mac-help/mchlp1038/mac

Hello cindy328,

Thanks for reaching out to us with this issue of your iCloud documents not opening. We're happy to help you with this. So that we can find the best path for a solution, we need a little info on what's going on. Are you having this issue with specific documents, or any in your iCloud Drive? Do you get an error message when you open a document? If so, what message are you seeing specifically? Get back to us with that info, and we can go from there.

Take care and be safe.