Scroll down the iCloud screen and look for Voice Memo. On your Apple ID page, scroll down and tap iCloud.
This is pretty simple open the Settings app and tap your Apple ID at the top. If you don’t want voice memos to take up space on iCloud, you can disable Voice memo sync. You can’t access them via iCloud in your browser but they’ll sync to your Mac. If you have iCloud enabled on your iPhone, then all your voice memos are being synced to it. The new interface is much less cluttered than the old one and it has one little under-the-hood feature that you might never know about iCloud syncing. It’s mostly a design overhaul but it seems to have a new option that lets you replace a part of the recording with new recording. The Voice Memo app is being overhauled in iOS 12.