I'm not sure what you mean by that; you need to complete high school and get a diploma to attend college. Do you mean that you are took a gap year and already have a high school diploma, and are now applying to college?
The best options for students without a high school diploma or ged is to go to community college then maybe transfer to a 4 year program elsewhere. Most colleges don't accept people with a diploma or equivalent GED. Also with your response to @zora a diploma isn't a score its just a certificate so are you referring to test scores ? Good GPA is a nice thing to have for college admissions
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I want to know if a good GPA and a low high school diploma score can affect my admissions chances.