Depends of the context. It could be a question
Are you going to do something today
It could be a statement
You are going to do something today
NOTE, it should be "Vas a hacer ago hoy"
Que vas a hacer translates to "What are you going to do?"
bien mah
what are you going to do tomorrow
It is "¿Qué vas a hacer?", meaning "What are you going to do?" Your answer would be in the form of "Voy a...", for example "Voy a ir de compras." - "I'm going to go shopping".
"tu vas voir" = "you will see"
Que vas a hacer translates to "What are you going to do?"
¿Qué vas a hacer en tu cumpleaños hoy?
Que va usted/vas hacer hoy? (Formal/informal)
bien mah
It literally means "...it which you are going to do today.." and it is more mellifluously interpreted as, "...what you're gonna do today."
Translation: Great/ good job. What are you going to do today?
"Que vas a hacer ahora?" means "What are you going to do/make now?"
Que vas a hacer el domingo proximo means what are you going to do next Sunday?
what are you going to do tomorrow
Que vas a hacer esta noche means "What are you going to do tonight"
¿Qué estás haciendo hoy? is the best way to ask "What are you doing today?" in Spanish.
How are you/how's things today