What is a good IQ score? What is a high IQ score? What is a low IQ score? If you really care about your IQ, these are the common questions might have asked at one time or the other.
Even before the 20th century, Lewis Terman (1916) already built up the first idea of IQ and proposed this scale for grouping IQ scores.
More at https://www.neuroscientia.com/p/cognitive-test.html