Hey there XR58,
We understand that you accidentally enabled VoiceOver and are now unable to enter the passcode to unlock your iPad. We'll be happy to help.
First, let's see if we can disable VoiceOver with the Home button shortcut. Do this by triple-clicking the Home button. This will only work if VoiceOver is set to this shortcut.
If it's still enabled, we'll need to use different gestures to move around the screen in order to enter the passcode. Check out those controls here: Learn VoiceOver gestures on iPad
Once you've unlocked the iPad, go to: Settings > Accessibility > VoiceOver
You can disable the feature from there.
We hope this helps. Cheers!