How bad or good would it affect my application? Knowing that I got a scores transcript.
It won’t be an issue. College admission officers deal with all kinds of grading systems. My D was in a program where they got evaluations instead of grades and it didn’t impact anyone’s college admissions (from schools ranging from LACs to large state U’s).
In addition, colleges often recalculate GPA given to them by high schools using their own parameters (ex. academic subjects only, unweighted etc.) so it won’t be a problem.