This is part of the problem. College admissions is so opaque that no one can really give you a good estimate. I believe that CC recently installed an admissions calculator. Not sure how good it is.
But a high school guidance counselor is probably your best bet. He/she will know the trend in recent years from your child’s high school.
I think Naviance or SCOIR is a good way to get a sense based on SAT/GPA what are within range. But beyond that it doesn’t help with holistic factors.