There's a couple pretty important pieces missing from the raw story link there. The chairwoman who is reported as having apologized was supposed to have shut down the woman's public comments when she began verbally abusing him according to other school board members. She didn't because she's a right-wing, hand-picked DeSantis lackey who appears on Fox News to spew CRT BS and she wanted to make sure all of those comments were out there on the public record.
Honestly, that's pretty tame for Florida school board meetings these days and a lot of people on the boards won't show up anymore, or only attend virtually out of fear for their lives. So good on him for even showing up for it.