If I submit my SAT and ACT score to a college, which one would they consider?

Here is how you need to approach this:
First of all you need to figure out what the college prefers, study the historical data available from class admissions - SAT or ACT, and then send that score.

If both scores are even, then send either one. If you send both, then the college will review both and decide which one to pick.

This is similar to when a student takes the SAT twice and reports both scores.

Hope that helps.