Most colleges offer their merit aid based on certain stats criteria. In addition, they have years of “yield” to look at and offer to more students than will typically accept the offers.
So, there isn’t “leftover” merit money at most places. And if you don’t meet their stats cutoff for merit awards, they aren’t going to throw extra money at you even IF there is extra money.
In addition, some colleges and programs do not get any leftover money to award later even IF there is leftover money. The college retains this money.
Sure, you can inquire…but really getting info about anyone else’s successes or not…won’t help you even if you have exactly the same stats, and the same college in question.