You might look at Purdue’s Data Digest, here, https://www.purdue.edu/datadigest/, under the link for “Applications, Admits, and Matriculations”. It is interactive, so you can input the parameters that most apply to you (for example, you can input “Resident” under the “Residency” tab; and “Liberal Arts” under the “College” tab). Based on your input, the Data Digest will generate information and create some graphs/charts from which you may be able to make an estimate of your chances. Also, there should be a table at the bottom which gives the admission rates (and yield) for students matriculating in the Fall semesters of the past 10 years in your particular college of interest.
You can also look at Purdue’s Common Data Set, here, https://www.purdue.edu/oirae/resources.html. Part C7 tells you what admissions factors Purdue considers to be “very important,” “important,” “considered,” and “not considered”; Part C9 of the CDS gives the median 50% for both SAT and ACT scores, as well as the percentage of the entering first-year class falling within certain ranges of SAT and ACT scores.