IQ tests don't mean much as they are just standardized tests that test math, data or pattern interpretation etc., which is academic at best. This has nothing to do with problem solving abilities or success later on in life.
Example 1:
It is generally agreed that Einstein was a genius and had a very high IQ. If you were to take Einstein however and put him in the African bush, he will probably end up dead by morning, when tribals who live in the region know how to survive. Aka, they know how to problem solve in that environment better than Einstein. The same tribals would probably score very low on an actual IQ test because they are uneducated and therefore don't know math or fare poorly at the modern workplace.
Example 2:
From my own personal life. There was this guy I used to go to school with and was in the same class from kindergarten to 12th grade, back in India where I grew up. He was not that smart and he did not really score that well in school. Fast forward to today, he is now a music composer (we did not have any idea he had any music skills when we were in school) in the Indian film industry. Drives a lambo and makes approx. $5M a year, way ahead of the rest of us who consistently had higher scores than him. I would show you his wiki page, but I will refrain in order to maintain discretion.