Is perfboard generally lead-free?
If the perfboard is tan colored with copper pads, there shouldn't be any lead there as perfboard is fiberglass and epoxy and if you can see copper pads, that's just copper. That is inherently lead-free.

On the other hand if you see a perfboard that is tan colored and has silver looking contact pads, and it isn't marketed as RoHS, then it likely has lead in it.

Overall, many things are inherently lead-free, they just haven't bothered to go through the RoHS certification process so they may not have a RoHS tag on them.