Savannah State University doesn't have a strictly defined minimum ACT score for admission. Their admissions process is holistic, meaning they consider your entire application, including your high school GPA, course rigor, extracurricular activities, and essays, in addition to your test scores (if submitted). While they don't publish a minimum ACT score, a competitive application will likely include a higher ACT score than a lower one.
To get a better idea of what kind of ACT score might be successful, it's best to check Savannah State's website directly, look at their average admitted student ACT score (if available), or contact their admissions office.