会做人 (huì zuòrén) means someone is socially skilled and considerate. 不会做人 means someone lacks social awareness. It's about moral character AND social competence.
culture
做人 is a core concept in Chinese philosophy. Parents and teachers often say 先做人，再做事 (xiān zuòrén, zài zuòshì) -- first learn to be a good person, then learn to do things.
