As others pointed out to me above, it's not really that secretive. The licence ranking pages give a pretty good idea as to which licence requires how many points.
CTRA race:
Bronze=300pts
Silver=1,300pts
Gold=4,300pts
Platinum=12,300pts
Titanium=anywhere between 50,000 and 50,500 pts (wild guess: 50,300pts)
SS Licence:
NatB=300pts
NatA=between 1,300 and 1,500pts, but probably 1,300pts
As National A is the highest anyone has, yet, everything above is pure guess-work, but I'd guess it's 4,300 for Interntl. B and 12,300 for Interntl. A.
Feel free to delete the figures, if it's against the spirit of CTRA to post these here.