What is a good hipscore for a bullmastiff?

his sire has -12 -9 on his ped papers and does it matter for breading even though his genaration paper is covered with red ccs
Answers:
Oh, you're British. Or your dog's heritage is British? That makes a difference. I think in your last question people were trying to figure out your dog's sire's score based on American testing methods.
Really, it doesn't greatly matter what your dog's sire's score is if you want to breed your dog. The fact that your dog's sire had his hips tested suggest that your dog's breeder was a responsible breeder. (I don't know British hip scores, but why don't you ask your breeder for help reading your pedigree?)
If you want to be a responsible breeder, too, you need to get your Bullmastiff tested before breeding him. You can't take shortcuts by using your dog's sire's records.
You should also put some Challenge Certificates on your Bullmastiff, instead of relying on the CCs in his pedigree. A dog's not worth breeding just because he has good ancestors. He has to be good himself to be worth breeding.

---

Have just answerd your previous question but, yes, hip scores are very important. Not much use having a handful of Champions behind if the next generation is crippled with hip dysplasia.

---

I have a dog whose pedigree is full of champions but he is not suitable for stud. He does not meet the breed standard he is too tall. Has your dog been in the show ring?
Discuss it with your vet you could have your dog hip score tested

---

I have just answered your previous question.
Yes, it is certainly worth building up a picture of the hip scores of the dogs in your dogs pedigree. After all, your dog's genes came from these dogs.
Hip displasia is something which can be inherited although there are other things which influence a dog's hips such as it's environment and nutrition.
As far as hips are concerned, the hip score of your dog itself is most important though.
I should say that there is a lot more to breeding than just a hip score. For example you should be considering your dog's conformation and movement, temperament and overall health. Has he been assessed by a good conformation judge?
You will need to have all the other health tests required for the breed carried out.