What are the odds of pregnancy? I’m on day 9 of my cycle and the condom broke?

If your periods are always regular then you'd be in your fertile zone.
Most women ovulate somewhere around days 12 to 17 of their menstrual cycle, & that's being very generous. It's usually nearer to day 14.
Up to a week before ovulation, your cervical mucus changes in consistency, so that it can save any sperm that enters your vagina, ready for when you ovulate (release an egg).
That means that you can become pregnant from sex you had up to a week before ovulation.
Plan B works by delaying your ovulation until the sperm leaves your body.
If you're already ovulating then it can't do that.
As you were quite a few days before ovulation, Plan B should have had time to delay your ovulation. It doesn't work for every woman, nor every time. It's not as reliable as regular hormonal birth control. It's simply worth a try in an emergency. Better than leaving it to chance.
If you had been much closer to ovulation, I'd have suggested using either of the other 2 methods of emergency contraception, instead. Either the other emergency pill called Ulipristal Acetate (Ella), or to have an IUD fitted by a doctor. Either of those things can be effective if done within 5 days/120 hours of the unprotected sex.

Ovulation happens generally between day 12 and 16 so you might be ok as the map delays ovulation for 5 days. I’m in the same boat I took mine in day 7 of my cycle