Yes I am the guy from Egypt, here is my appraisal on this one.
500K results in Google, promising! .com, .info, .co.uk, .org are taken which is extra for your .net. 370 searches for IQ Scores, that is impressive too.
Low$XXX-high$XXX. is my estimate for the name, wholesale. Because of very rich keywords, popular, and also taken in other extensions. For end-user, possibly enter the $X,XXX+range . The .com was sold for 14K but in my opinion the keywords IQ scores are better than IQ score, however the only downside is that it's a .net. So you could get possibly X,XXX somewhere in a right sale.
80% less than IQScore.com sold for would be one way to appraise it. Not always the best way to appraise but it's free and fast. I took several IQ tests online. Sort of fun. One IQ test said at the end.... now that your free IQ test is over if I wanted wanted my IQ Score I would need to pay them to see the results. IQTest.net would be an easy site to develop and maintain. Great name with excellent potencial.