What math and scientific disciplines should I understand in order to make money?
Not in terms of "muh 300K starting", but stuff that's just super practical and helps you beat the system more often than not.
For instance, the simple idea of expected value might help you decide which bets to take and which bets to avoid.
Or like the kelly criterion if you want to have optimal growth while avoiding complete loss.

I'm already studying elementary probability and statistics, and reading Taleb's books for a general philosophical guide on dealing with uncertainty.
My goal is to apply this to creating an automated trading bot and various tools for analyzing financial data. Is that a viable way to make a passive income or is quant just a meme?

Specific books and resources would be appreciated.