What is moral, what is good, and what is beautiful are things that science can't judge. Science can observe that certain things result in preferred outcomes.

For example, by science one may observe the law of reciprocity results in better social cohesion, but science doesn't judge whether social cohesion is good per se. That would be the person's own judgment that comes from somewhere other than the scientific method. Science can go further to observe that people in society generally prefer cohesion, that the longevity of those people may be higher, that suffering may be lower, etc. if the law of reciprocity is followed by the members of the society, but it cannot judge whether those are good things. Good is a human element one imposes upon science, a presupposition when once engages in the scientific method.