Well….this query is posted in the financial aid section of this forum…so I will comment on that.
The number of AP courses you take might help with admissions. But I have never seen a merit aid metric that includes number of AP courses for the awarding of merit aid. If someone else has, I would like to know the college.
Adding that if a college used the HS weighted GPA, those AP courses might help increase the GPA to a level where higher merit aid is awarded. BUT where I am, a kid taking 12 AP courses would likely have a very high GPA anyway.
To the OP…are you asking if 12 AP courses are enough for admission (if so, perhaps this thread should be moved)….or are you asking about your kid’s chances of receiving merit aid with 12 AP courses (see my paragraph above this one).