Oh I can't resist if it's ok I'll have another shot!

the "play" in your "high school auditorium", is symbolic of the literal events that we symbolically refer to as a "show".

Being set in your past high-school, indicates you are or have learned more once again, i.e. it's a milestone learning period but this is a very personal symbol so there may be more angles to it, like events or time now, even in your own life during this period, may be mirrored or rhyme. I am only suggesting this to give you an idea what to look for. You have all the info in your noodle as to what it might incur.

Trump is the figurehead of this period of learning for sure, so he may indicate a trusted validation that what you perceive, the "play" or "show" you are watching is as you perceive, i.e. you know all about it / what you know is correct (more than you realise)

Another thought as I write, maybe during high school there was a need for such encouragement or validation and maybe it was not received, from the equivalent figurehead in your life, father, mother, teacher professor i.e. mentor type people who had responsibility to keep you safe wheel you learned through he safety of simulated ;learning, i.e. a play is a narrative that can teach and guide, and everything that happens is not real but you can draw real lessons and insights from it (very much like dream). I am not trying to reach here, but sincerely it popped into my head and I thought I'd share the idea for the chance it might unlock more for you.

I find your dream coming across as a very positive and encouraging message on one level, so maybe this give you more food for thought and you can agree, disagree or go further to unlock.