voice over is on screen locked. how do I unlock screen or deactivate voice over????

Just to be clear, to enter a number of your passcode, you tap on the number, hear the number, then tap on the number twice more to enter it. It should register in the dots above, showing that it's been accepted. You don't use the Home button to do this.

Assuming VoiceOver is your Accessibility Shortcut, three clicks on the Home button should turn it off. They can be the same speed as you normally double click to access the app switcher.