I hear you're having your house repainted !!!
- How does it look ?
- How is it looking ?
Grammar's rule is : We use present continues when we want to emphasis the station is temporary.
but the two questions are correct ? I don't understand why?
1-How does it look ? 2-How is it looking ?
Both the sentences are grammatical and Fine.
if you are asking about how the house looks at the present time" its appearance" we can use both , without any difference in meaning , However, the use of the presrnt simple is more common than the present continuous. but, many people use the present continuous for emphasis.