Search notes on iCloud.com
Search in notes to find the exact note you want—search for specific text, an emoji, a particular attachment, or use a suggested search. All folders except the Recently Deleted folder are searched.
Go to icloud.com/notes, then sign in to your Apple Account (if necessary).
Click the search field at the top of the notes list.
To refine your search with Suggested Search, click one of the options in the search list.
Type the text you want to search for.
To return to the complete notes list and clear the search, click
in the search field.