Kinked tail?

Will this be carried on to the young or do you have to breed to find out?

I'm not positive myself. But a good rule of thumb is NEVER breed a kinked animal. Even if it is just a small kink on the tail. Just imagine breeding it and caring for the eggs for so long only to have the babies come out deformed.

I dont have any but I keep seeing more and more pop up for sale and I was curious cause when I bred geckos if I ever had one that was in question it was mine until it died and it was just a pet.

I wouldn't breed any animal with a kink, except perhaps a caramel albino with a very minor one. Since kinking is attached the caramel albino gene anyhow, there's no logical reason to reject a caramel that has only a small one. It can't be bred out.
Sometimes kinking is genetic rather than developmental, and you don't want to risk passing on a gene for it (aside from the aforementioned T+ albino gene).

I'm actually looking forward to seeing if the Crider morph proves to look very similar in combos, so that the caramels can be largely retired altogether. I think the kinking is a more serious issue than the spider wobble, and certainly far more of an issue than the cinnamon duckbill.