I recommend looking through the last cycle’s USC SCA applicants’ thread…
And just keep in mind that you would actually have to be admitted twice… by USC overall and into SCA specifically too. It is possible to be admitted only into USC as Undeclared… and then internally transfer into SCA later. My younger daughter did so in fact.
In terms of getting “Chanced” for USC or USC + SCA, or to any of the nation’s top forty or so elite colleges and universities, it is virtually impossible for others to predict what may or may not occur in your specific case. In terms of USC specifically… with an admit rate now below 16%, and with 4K+ applicants with 4.0 unweighted GPAs and test scores in the 99th percentile among those not gaining admission, your success will instead likely depend on too many potential factors for anyone to correctly evaluate… making predicting admission nearly impossible.
It can be even more complicated when applying to SCA, as so much of it will depend on subjective matters related to your creative submissions… written and visual.
But this also shows that they admit many without perfect grades or test scores. They are after all seeking to craft a well-rounded and diverse freshman class comprised of those who actually have a strong affinity for or connection to USC. They do aim to admit those who they project will thrive well at USC and bring something unique to the campus environment.
So your individual admission decision will likely come down to a composite and holistic analysis of your stats coupled with writing ability / essays, ECs, potential leadership roles, potential other unique qualifiers (URM, First Gen, geography, demographics, etc.), your Why USC? explanation/reasoning, etc.
And that “Why USC or why USC SCA?” explanation is likely the most important single component of your application. You do need to provide a well-thought out and well-researched answer as to why attending USC SCA is truly significant and important to you specifically. And moreover, USC SCA does want to gain a sense as to what you will be uniquely contributing to the greater USC SCA community if admitted.
Your SCA supplements may very well be able to make up for lower test scores or GPA.
Before applying, I suggest reading through the very helpful insider’s guide to USC admissions…
https://tfm.usc.edu/a-guide-to-uscs-college-admissions-process/
Good luck…