IQ score is a sham - the tests are quite fallible, and historically they were used as a justification to discriminate against people who are poorer or with worse access to education. Nowadays, I see it quite a lot in the context of eugenics, where some professors and philosophers attribute poor people being poor due to their low intelligence (low IQ score), and that they can’t be helped while rich people got where they are due to their intelligence (as in they have a high IQ score on average).