Not BTEC, it's a level 1 NVQ in Construction Skills he needs to be applying for if unwilling to revise. You only need a few GCSEs levels 1-3, so I think DS can manage that without having to make any effort.
Obviously, he will be expected to learn at college and graft on the building sites, but if that doesn't work out, then he can try beauty college and see if that's more appealing.