From the specs, the lens's zoom is from 4.1mm (wide) to 16.4mm (zoomed in). Focal length is the only standard measurement of this, and that's almost universally in millimeters. (You can find it specified in inches if you go back to 19th century lenses.) The range 0–852 clearly doesn't correspond directly to focal length; it is probably stepper motor steps or something similar that is specific to this particular camera. There's not even any promise that this is linear.

Focus distance, unfortunately, seems to be a similar situation. The close focus distance is 0.5m and the far focus distance is unspecified but is probably past infinity. And the complication is probably compounded because it's extremely likely that this distance changes as you zoom. (That is, it's extremely unlikely that the lens is parfocal.) This means that it's probable that a single number for "focus" can mean a different focus distance depending on the zoom setting.

All that said, if you have a specific fixed setup, you can probably just measure and see what the correspondence is. It's possible that you can derive a formula which fits well enough for your application — or you can even just have a look-up table for each value. (Although note that the same value may not always be exactly the same position — that kind of precision might not be in the design of the camera.)