Sure it's all scripted to a point, but as to what extent is how genuine it will be. They can line up a guy to bring in a civil war era hand gun to pawn stars, and make sure the cameras are rolling, they will even tell the pawn stars shop this guy is coming. But they won't say "the producer wants you to turn this guy down". So the reality is will they won't they buy the gun.
Or having the cameras roll on a crab fishing boat, and if the crane cable breaks and a steel trap crushes a deck hands leg. It's the unpredictable that gets the ratings. The producer would be a nut to try to edit that outcome out.
Having two female pool sharks get into a money game and then announce they will win, and the two guys they play throw the game and ham it up for the camera will just be transparent. That's entirely scripted, and won't last long. I personally would love to see an unknown come in and wipe the table with them, and see how they react. would they practice harder? Make excuses?
Isn't that why we go watch pool tournaments? It's the unknown outcome that's fascinating.