"Hur går det" isn't often used in the "how are you" sense, I'd say. It's often used to refer to something specific:
"Jag har väntat i en timme. Hur går det?!" => "I've been waiting for an hour. How's it going?!"
"Du har använt Duolingo ett tag nu. Hur går det med svenskan?" => "You've been using Duolingo for a while now. How's it going with the Swedish?"
"Hur går det till?" => "How does it work?"
Could "how is it walking" be correct? Or is går only 'walk' as in 'go' (ie german gehen)
Whilst literally correct they don't want us to translate directly for sentences like this which are more likely to be used in the colloquial form "how's it going?" rather than asking about how something can walk (e.g. a robot or something that you'd expect not to be able to walk). I'm told that "hur går den?" is more appropriate in that situation
How can I do the correct sound of Hur, it seems something like Hjugrə, just to I be able to do that sound correctly
I typed what I heard: "Hur gör det?". It should not have been accepted, I think, because 1. it is pronounced differently and 2. has a slightly different meaning. Or are the differences really nil?