Each PBR region is run as a separate entity and in general a good regional resource (although they're looking to go more national, with the Lakepoint agreement, etc). They're good to get your measurables, at a reasonable cost, and will help in your recruiting by reaching out for you to local schools. They run mostly showcases, not tournaments (see Lakepoint reference) and will invite regional schools to attend.
If you live in the Northeast, but want to go to school in the West Coast, PBR should not be your single source to get you there. In this case, they may only be helpful in getting your measurable, profile and their write-ups.
As for futures, it's as Diggum says. You may only need to go to one, or two, of their showcases to get an invite. It's a good event, but not the end all/be all. At your son's age, his goal should be to get better and stronger each year. PBR Futures may just be part of that journey.
Good luck.