Does anybody have any insight on its level of difficulty, whats on it, how to prepare for it etc. Also how many questions are there total? Any info is great seeing as I’ll have to take it to get into a calculus class, thanks 
Here is a link published on the ALEKS placement test by University of Miami. http://www.math.miami.edu/undergraduate/aleks-math-placement/about-aleks/
It looks like you can take it 5 times, and there is an online prep module that it offers if you wish to retake it. 30 questions, takes roughly 90 minutes. Shouldn’t be too difficult since it only tests from basic Algebra concepts to Pre-Calculus.