The “More” menu item is no longer available from the VoiceOver rotor for notifications on the Lock screen or in the Notification Center. Note that the same functionality can be accessed by performing a long press on the notification. It's also worth noting that the “More” option is still available on notifications when they appear as banners on the Home screen.
iOS/iPadOS
Post Date:
As of iOS 13, Apple is deprecating 3D Touch in favor of a long press that will bring up what it calls a “Context Menu”. Unfortunately, there are numerous places system-wide where the VoiceOver rotor contains a “Show Context Menu” action on a UI element which does not support this feature.
A prime example is the App Store, where many UI elements will report that you can double-tap to show the Context Menu, but where a double-tap does nothing.