Zero because he built nothing of value besides a large number on a screen.
Tesla has no special tech, no IP, no huge amount of car sales, has barely turned profit in it's existence, been nearly bankrupt, manipulated their stock price and lied to the SEC and NHTSA.
They designed a car ten years ago and haven't updated it at all. They're built in tents, outside with all the QC of a Russian kinder egg. Every innovation and product release has been found to be vapourware.
It's been a clear case of what SBF called "the magic box". VCs wanted to believe the Tony Stark myth, every investor understood if they backed it, they could make the value of the magic box gain value, guess what it did. Any fundamental analysis shows clearly it's overvalued several hundred times.
It's been one step away from a Ponzi scheme since Musk took over.