The UNC-CH Common Data Set, under Part C7, states that standardized test scores, application essay(s), letter(s) of recommendation, and the rigor of your high school record are “very important” academic factors considered for freshman admission, whereas GPA and class rank are “important” academic factors considered for freshman admission. Extracurricular activities, talent, and character/personal qualities are considered as “very important” non-academic factors.
Further, Part C9 of the Common Data Set for UNC-CH gives the median 50% for both SAT and ACT scores, as well as the percentage of the entering first-year class falling within certain ranges of SAT and ACT scores; and Part C11 gives the percentage of entering first-year students falling within a range of unweighted GPA on a 4.0 scale.
This is a preface so that you can see some objective data in the CDS from previous admitted freshman classes at UNC-CH. By way of comparison for you, our OOS high school usually has 8-10 students who apply, and 1-2 students who are admitted, each year to UNC-CH; and, with the exception of legacy students, our admitted students have ACT scores of 33+ (roughly equivalent to a 1500 SAT score) and weighted GPAs of 4.4+. These successful applicants also were involved in extracurricular activities that showed commitment over time (no “drive-by” ECs), and demonstrated leadership in the school as well as their ECs. Other kids in our city who I know were admitted to UNC-CH recently also had similar academic statistics and non-academic characteristics; and all of these kids were “unhooked” in admissions parlance (i.e., not a recruited D-1 athlete, or a URM, first-generation college student, disadvantaged socio-economic status, OOS legacy, etc.).
Having stated all of the above, your GPA is very good but your SAT score is likely too low at this point for you to be competitive for admission, IMO, unless you have some sort of admissions “hook.” What you can do at this point is work to ensure that you have top-notch essays and letters of recommendation, which may help (as they are “very important” academic factors considered by UNC-CH); and do what you can in your application to emphasize your leadership roles in your ECs.
Have you taken the ACT? Perhaps that could be another route for you, as many students tend to perform better on one or the other standardized test.