Has there ever been a 7–5 in the La Liga?

Yes, 1 time.

The only time: January 14, 1940, Athletic Bilbao beat FC Barcelona (Athletic Bilbao 7–5 FC Barcelona).

Nearby scores

1. 8–4 Never
2. 8–5 Never
3. 8–6 Never
4. 7–4 2 times
5. 7–5 1 time
6. 7–6 Never
7. 6–4 10 times
8. 6–5 1 time
9. 6–6 1 time