Delete info on icloud
How do I delete documents in iCloud?
iPhone 13 Pro Max, iOS 15
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Either by signing into you account at icloud.com or by deleting a document on your device in the Files app - if it is signed into iCloud.
Your iCloud documents are synchronised between iCloud and your devices. Deleting on one will delete everywhere.
Read more:
Access and manage your files in iCloud Drive - Apple Support
Access iCloud Drive files from your iPhone and other devices - Apple Support