Psychological evaluation by psychologist. Are you in school? If not, are you receiving vocational services? Seeing a doctor? You can’t ask them if you would qualify for free evaluation. Otherwise you’d need to pay.

Average IQ is between 85 to 115 (one standards deviation above and below 100). You think you have above 115?

I agree and know from professional stand point that IQ score can fluctuate due to mental state of a person and certainly ASD might effect it. So it’s possible