By definition, it'll be 100. It was originally used to highlight pupils lacking in certain areas, and was normalized to 100. Ultimately the IQ test can only really show one thing - what a person scores on that particular test. Sure it correlates with general intelligence, but as a number it isn't particularly accurate in determining someones intelligence - more their level of education, especially as one can learn how to get much higher scores in IQ tests: that doesn't mean they are more intelligent, just that they have practiced.
So, I'm going with 100. Unless you are comparing those in the forum to those who ceased education when they were 12? Or compared to college students? Its all relative (which is why its normalised) and doesn't' have much meaning in absolute terms.
I read some very "new age-y" "post truth" attitude. "Intelligence is so multifaceted that it can't be measured", "Intelligence is just cultural bias", "Intelligence is all relative". They all have a tiny grain of truth, and there are 'black swans' like people with Savant Syndrome and Synesthesia that 'prove' very focused points.
I am sure that intelligence ("the ability to acquire and apply knowledge and skills") is a continuum of ability in people. Some people are more apt at it, and others are less apt.
I cannot play guitar, even after years of practice - on a music test I would get an F. Although I have ginger hair I am not Ed Sheeran.
I cannot do art - my art would ever been perceived as "like that of a five year old". I am not an artist.
But I can solve quite a few classes of useful problems better than most people I know. I can cook half a recipe without a calculator. I can bang nails and screws into wood, and get something useful. I can occasionally make a enhancement MOSFET switch on.
The earlier comment to the book "Flowers for Algernon" is especially close to home for me - my son has massive physical an intellectual disabilities. I have spent the first half of his life wishing there was a "fix" to unlock the awesome child that is in there, and completely missing the point that what makes him so awesome is that he is who he is, even if he has an IQ that puts him further down the opposite end of the IQ spectrum than the most intelligent person on here. If there was a 'fix' to allow him to see the world as the world see him, it would break my heart (and most likely his too).
So if you have a really high IQ treasure the gift you have, before life robs it from you through age, illness or disability. Use it to make a difference to others, especially those less fortunate or gifted than yourselves. Invent that next "Talker" for people with motor neuron disease, or the better can opener. Solve global warming if you can. Don't squander it.
I saw my son's orthopedic surgeon the other day - sometime after rebuilding the boy's hips he had a stroke, and now shuffles around with a cane. Time will catch up with even the best of us one day.