Close to another 100!:

https://www.bloomberg.com/features/elon-musk-goals/

The proportion of time Musk devotes to each company is derived from a description he gave at Tesla’s annual shareholder meeting in June 2017. "The Boring Company is maybe 2 percent of my time, Neuralink 3-5 percent, Open AI another couple percent,” Musk said. The rest is split almost evenly between Tesla and SpaceX, he said, but “slightly more Tesla—it’s like a drama magnet."

Another 80 per week. He just works quite long weeks.

With 168 hours per week that would require some rather advanced magic.

The Boring Company's real goal is to drill a black hole so Musk can work from a time dilation singularity.

Or a company called Wells that produces time machines, like Tesla produces cars and batteries.