Personally I think IQ scores are pointless. (Btw I tested mine and it’s a good score, but that’s not relevant).
They only tell you how smart you are, if you are using your mind to absolute full speed and capacity, and in all ways.
But let’s be honest – do any of us do that all day long? Even a professionals job is not really testing them to the limits, because the person is just using and applying already-learnt skills all the time.