Hello jjloverly,
It sounds like you're looking to use iCloud Notes for your devices, right?
If we have that correct, check out the steps below to get started on iOS devices. Notes isn't available for the Apple Watch, so this wouldn't be available. You can learn more about iCloud Notes here: Set up iCloud for Notes on all your devices - Apple Support
Set up iCloud for Notes on your iPhone, iPad, or iPod touch
1. On your iPhone, iPad, or iPod touch, go to Settings > [your name] > iCloud.
2. Do one of the following:
• iOS 16, iPadOS 16, or later: Tap Show All, tap Notes, then turn on Sync this [device].
• iOS 15, iPadOS 15, or earlier: Turn on Notes.
3. To view notes stored in iCloud, open the Notes app. In the Folder list, select All iCloud or a folder in the iCloud section.
If you're looking to use voice memos on your Apple Watch, these can sync if you would like. Check out more details on this, here: Record and play voice memos on Apple Watch - Apple Support
Take care!