is 650 a good sat math 1 score?
Depends on why you are taking it and what schools you might be sending it to
most likely UC or NYU
Then, no.
Why even take math1 though?
Which other tests have you taken?
What major are you aiming for?
Have you read the UC requirements? (Hint: subject tests aren’t one of them - but A-G requirements are absolute).
Also if you are targeting the UC’s, Math 2 is recommended not Math 1.