Hey I'm not sure about a sentence, could someone be so helpful and has a look at my following sentence:
Do you know how you get to the airport?
Do you know hot you getting to the airport?
From a grammar point of view "how you get to ..." is fine, too, but a bit unusual.
"how you getting" is completely ungrammatical because "getting" is technically not a verb (the ing-form's function is either that of a noun or an adjective) and you definitely need a verb.