IQ is irrelevant to SAT scores. SAT scores are irrelevant to IQ. IQ in general is just pretty irrelevant - yes, it’s a measure of your ‘intellectual potential’, but 1) potential means absolutely nothing if you don’t work hard yourself and make something out of it, 2) I have seen many, many hardworking peers outpace the more ‘naturally smart’ ones who tend to laze around more, and 3) IQ tests are inherently faulty and cannot 100% accurately measure IQ anyway. You /can/ train for IQ tests, which is why (where I’m from at least), Mensa only allows 2 tries at the test, at least 1 year apart.
And I’m not bitter or anything, I scored over 160 on the official Mensa IQ test with no preparation or anything, and I took only because it happened to be free (as I’m a student) and I was curious. On the other hand, I studied 3 months for my first try at the SATs, scored a low 2100+, studied smarter one year later, and scored 2300+ for my second try.
Stop putting IQ on a pedestal, and I think everyone already knows that SATs is just a game you need to study and beat. True success, be it in life or any academic field, relies on many significantly more important factors, such as work ethic and passion.