How do I look at my notes on iCloud?

Do you mean in a web browser at icloud.com?

Sign into your account at www.icloud.com and access the notes from there. To do this you must have iCloud notes active on your device.

Use Notes on your iPhone, iPad, and iPod touch - Apple Support

Set up Notes with iCloud 

You can use iCloud to update your notes across all of your devices. To set up Notes with iCloud, go to Settings > [your name] > iCloud, then turn on Notes. You’ll see your notes on all of your Apple devices that you’re signed in to with the same Apple ID.

Treylum3 Said:

"How do I look at my notes on iCloud?"

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Go Here: https://www.icloud.com/notes