Mark makes $1 a year. Now if we count his dividends sure, but I wouldnt say that those are payment for his work since he'd get them if he was working or not.
His base salary was $1. But his total compensation was around $23 million which includes his fringe benefits like personal security, private jet, health insurance, etc.
That's ~$24.4 million in explicit fringe benefits allocated by Meta's board; it's not like Zuck is willy-nilly exchanging family security allowance for Gucci bags.
To the GP's original remark, Meta paid out a quarterly dividend of $0.50/share a few weeks ago[1]...I'm sure you can ballpark what Zuck's cut of that was. When you do, square that notional figure against the limited use total comp above and tell us why the latter even matters.
I never quite understand why people use ambiguous or uncommon abbreviations in comments. In this case I'm pretty sure they were talking about private jets (because it was spelled out in another comment), but I can't image most persons talk THAT much about private jets that they are used to that abbreviation.
But in all likelihood his contribution to Llama 3 consisted of... approving Llama 3.