A good chunk of Apollo knowledge isn't very useful for various reasons.
1) The tribal knowledge to even implement Apollo era technology is pretty much gone
2) Apollo flight hardware doesn't exist, probably couldn't even be manufactured without extremely expensive tooling and build up to recreate outdated hardware.
3) Lots of Apollo era designs don't exist on paper. The F1 engine doesn't really even have a standard design, since every iteration was changed to be "better" by throwing shit against the wall and seeing what sticked.
1) The tribal knowledge to even implement Apollo era technology is pretty much gone
2) Apollo flight hardware doesn't exist, probably couldn't even be manufactured without extremely expensive tooling and build up to recreate outdated hardware.
3) Lots of Apollo era designs don't exist on paper. The F1 engine doesn't really even have a standard design, since every iteration was changed to be "better" by throwing shit against the wall and seeing what sticked.