I Think that tu, can be use it at the end of the question, otherwise vous si used in a normal context

I Think that tu, can be use it at the end of the question, otherwise vous si used in a normal context

Bonjour,
Vous : pronom personnel masculin et féminin de la deuxième personne du pluriel, ou pluriel de courtoisie.
Vous devez écouter.

“Vous” is used either to talk to several people at the same time or to talk to one person in a formal situation. “Tu” is used to talk to one person and in an informal context.