Scrubbing gesture on iPad using a bluetooth keyboard

Hello. I have a bluetooth keyboard for my iPad and have a question. I thought the escape button was the scrub but aparentli that is a home button so I would like to know what the scrub gesture is on a keyboard.

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What?

If you mean "go back" as also performed by the scrub-gesture, that should indeed be the Escape key. Home is Ctrl-Option-H, or if you prefer VO-H.
I don't have an iPad at the moment, but this is how it works on my iPhone, so it should absolutely work the same way on all devices running iOS.