I’m pretty much of a novice too.
I can’t find President Trump on there either. You’re right, there are a million imitation accounts. Parler should have stopped people from creating these look-a-like accounts. I was looking at people like Mike Lindell & Ivanka to see if they were following any “Donald J Trump” and they were not. So, I have no clue as to what his account might be, or if there is one.
My personal opinion (have not seen/heard any indication, just my thoughts) is that he’s probably going to wait until they have whatever social media platform they’re planning on, then have an account on there.