Has there ever been a 15–12 in all competitions?

Never.

It would be a scorigami. Based on the average number of goals in all competitions, the chance of a game ending 15–12 is about 1 in 724,458,321,785,800,100.

Nearby scores

1. 16–11 Never
2. 16–12 Never
3. 16–13 Never
4. 15–11 Never
5. 15–12 Never
6. 15–13 Never
7. 14–11 Never
8. 14–12 Never
9. 14–13 Never