When someone addresses you formally, it is polite to maintain that same level of respect in your reply. English Meaning I am well, thank you. And you? Muy bien, gracias por preguntar. Very well, thanks for asking. Me va bastante bien, ¿y usted? It's going quite well for me, and you?
Using the formal register ( usted ) establishes professional boundaries and shows cultural awareness. It is standard in the following scenarios: how are you in spanish formal
In formal Spanish, the standard way to ask "how are you" is . When someone addresses you formally, it is polite