Comment
It looks like someone tried to literally translate the English expression "You go, girl" in to Spanish. As Answer 1 notes, this is not the meaning that the Spanish carries. If you want to impart the meaning of "You go, girl" in Spanish, what you should say is, "¡Adelante, chica!" / "¡Pa'lante, chica!" (Forward, girl, substandard usage) or "¡Enséñales, chica!" (You show them, girl). It is worth noting that this expression is not native to Spanish-speaking countries.
usted va muchacha
Either "tú vas" or "usted va", depending on who you are talking to.
¿Va usted conmigo?
¿Cuándo va usted/vas a regresar a la casa?Cuando usted va a regresar... --- When you are going to be home.
Aun no me conoce usted, cuando va venir a Kentucky
How many times a year do you go to the hospital
Usted VA a tener una pelota.
¿Usted va a ser / será mi maestro de español?
"usted va a perder mis besos"
Voy and Va both come from the verb ir.Voy means 'I go'.Va can mean 'He/She goes' and it can also means 'You go' if it was with the word usted.
Que va usted/vas hacer hoy? (Formal/informal)
It is "tu vas" or "usted va", or "ustedes van" in the plural.