What's "vibe" mean? Like, his mood?

Native speaker’s answer
Rebecca
"Vibe" refers to a person's mood or emotional state that can be communicated and felt by others. If someone is giving off "bad vibes," it means that they're giving off a negative feeling to others. You can also use the word to describe the atmosphere of a place. Ex: What happened to Jolie? She's giving off bad vibes. Ex: I love the vibes of this cafe! It's giving me hipster vibes.