It might not be 1024, but he probably has more failures than successes: Solar City, Neuralink, Boring Company, Hyperloop (he decided not to turn this into a company, but he wasted his and his other companies' resources on this so I think it is fair to consider it a Musk failure).
Solar City isn't a failure, it's part of Tesla now. Still selling panels, as far as I know.
Boring company is also not yet a failure, and has recently built several tunnels. Neuralink is an early stage research company and is still humming along. It may fail some day, but it certainly hasn't failed yet. As for Hyperloop, he specifically said he wasn't going to build it, and several companies are still working on it, including in China:
None of these things are "failures". They may become failures one day. It'd be crazy if some of them didn't. But you can't count a research project as a failure just because it doesn't have a product yet.
None of those companies have any real success to show for themselves. They haven’t met the hype that Musk has put on them or shown any real progress in reaching that hype.
I can at least understand you saying it might be too early on something like Neuralink, but I don’t understand calling Solar City a success. Musk had to bail it out with his other company in a deal shady enough to trigger lawsuits.
