By human values we refer to the broad sphere of what human beings and communities find important, significant, meaningful, worthwhile, desirable or good.
Human values include moral or ethical values, concern with right action or good modes of being, but also more broadly include concern with human happiness, well-being, or flourishing. They include aesthetic values, concern with the beautiful.
The adjective "human" serves to distinguish our more inclusive field of concern from certain others where the meaning of the word "values" is more tightly focused. In economics, for example, we say that properties, stocks or currencies have certain values -- or in logic or algebra, we say that statements or variables may have certain values. Of course, human values may include a concern with these.