On my iPhone, a menu has shown that I am unable to close.
A menu has popped up and I can’t close it
[Re-Titled by Moderator]
iPhone XS Max, iOS 13
Would this menu relate to a webpage - or an App? Something else? Is the iPad/iPhone completely unresponsive, or are you able to otherwise interact with the device? With benefit of more information, specific guidance may be possible.
If your device is completely unresponsive, perform a forced restart: