Answer:
'Que va usted/vas....' (+ verb-infinitive) = 'What are you (formal/informal singular) going (+ verb-infinitive, i.e. 'to....)
e.g. 'Que va usted/vas traer manana?' = What are you going to wear tomorrow?
Plurals are:
'Que van ustedes....' (formal plural)
'Qus vais....' (informal plural).