While UCF doesn't publish a minimum SAT score, successful applicants generally have scores significantly above the average. To get a sense of the competitive range, you should check UCF's common data set or their admissions website. This data often provides the middle 50% range of SAT scores for admitted students, which gives a better idea of what scores are generally successful. Keep in mind that this range will vary slightly from year to year.
In short, aiming for a higher SAT score will improve your chances of admission, but it's not the sole determinant. Focus on a strong overall application.