SAT Subject Math 1 vs Real SAT Math

I took the SAT Math 1 test in June and got my score back today and it was a 750 (lower than I was hoping). Is there anything that this score can tell me about how I’ll do on the PSAT or SAT Math section? I have not taken the SAT yet (I am a rising junior) but got a 680 on PSAT Math last fall with with very little knowledge of algebra II.

I took Math I when I was a sophomore and got a 750 as well. I did not take the SAT, but on the ACT I got a 36 on the Math section. However, on the junior year PSAT I think I got a 700 on the Math section, but that was because I was a little sick that day and was not focusing on the test completely. The 750 is great through (91st percentile); this shows that you can easily get high scores on Math II and any other Math section out there, as long as you take Algebra II/Trig/Precalculus.

I’m planning on taking the ACT as well, but I’m more focused on the SAT because I live in the Northeast.