Has there ever been a 13–12 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 13–12 is about 1 in 7,671,802,979,245,842.

Nearby scores

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