I've probably posted up thread somewhere. The benefit to IB in public school is that you get some aspects of private school type classroom structure and learning. Or it's possible if well-implemented.There's plenty that falls short wrt how the curriculum is delivered, though, depending on the teacher. For my kids, I value the writing demands, and even though one of my kids is pretty frustrated with the time this requires, it may be one of the better take-aways from a mediocre FCPS HS. I don't care about getting college credit for IB courses and the most selective schools don't give credit for IB or AP, they just like to see the student took on and succeeded with the demands. It might give your kid some more elective choices at some universities, as they'll get some general ed requirements out of the way, though it can also be done with AP. Here's some examples of what you can jump over at VA TEch depending on your scores.
https://registrar.vt.edu/content/dam/registrar_vt_edu/documents/Updates/ap_ib_clep/IB-Higher-Credits-2017.pdf