Short term QQQI or SPYI holding?

I am new to dividend trading and trading in general so there is no need to call me an idiot for asking this question. I already know an idiot. If you were to hypothetically buy several thousand dollars worth of a fund like QQQI or SPYI just before the ex div date and then sell a few weeks later, would taxes and or fees wipe out your payment for that month? Any advice on how I could evaluate this scenario for myself would be helpful since I am trying to learn and don’t know how to ask the right questions yet.