Paying for scores is like paying for As. It's teaching your child that you only love them for what they can do, not who they are. It's not a good parenting strategy.
Not sure were in the world you would equate reward as a show of love. And of course every family does whats right for them.
We don't reward for scores and placing. They get medals for that, that is the reward. And a placement or score is subjective to who her competition was that day, the judge. She could have a better day gymnastics wise and place/score lower then at a different meet. The meet results are far to subjective. No we don't do flowers at an orchestra concert. Maybe if she had a special solo or something. She might get flowers at moving up this year.
We have been known to buy a Tshirt for a special meet. But that is a surprise, not a reward.
I think there is also a difference between a surprise after the fact. VS a promise tied to results, which is more like a bribe.
We have been known to celebrate effort. More likely to celebrate the hard work and skills achieved of the year at the end of the season.
But here we do reward A's. And I have the same reward system for my nieces, nephews and my step son as well. Again, all families are different. Her Dad and I have jobs where we get compensated. School is her job and we are OK with some compensation. And we in fact pay much more for all A's. We love her no matter what but, but the extra effort of all As and for her it does require effort is worth it. Her grades will be tied in the future to extrinsic tangibles. Things like qualifying for academic aid, choice of college. She will have more possibilities and choice with better grades. And its not subjective, there are clear expectations as to what qualifies for an A.B. C and so on. And she is capable of achieving A's. Now if she had an LD, the bar might be set different.
She knows we don't care if she gets a B or an A. Our love doesn't change but the cash does. She lost 100 dollars one grading period last year. One test. A take home test. She had 4 days to work on. And she didn't ask her father or I to review it. Now we wouldn't of given her the answers but yep I would of said you need check the following questions. She elected not to do that. So the grade on the test cost her an A. No biggie in our world, a B+ is a fine grade and it cost her 90 bucks. Oh well. I'm pretty sure she will be more careful about a take home test, which is essentially a gift from your teacher, in the future. No yelling, harping, dwelling needed. In this case the extrinsic made the point.
Again each family does what they think is best.