Scores on tests are only part of the decision making process. Depending on the schools you are looking at, it may matter very little or may be really important.
Grades in school, extra-curricular activities and volunteering can also play into it. It also depends on what schools; I think SAT is more important on the coasts and ACT is in the middle of the US (though that may have changed).
My question is do colleges even care about SATs scores? Last year I took the test, I got 6 prefect scores but I'm still having trouble getting into a school.