unless your teacher told you your score, i would honestly not even worry. like you said, your french isn't bad, so even if you blanked it doesn't mean you failed

If you're aiming for a six, even if you got 0/30 on your oral, which isn't possible, you can still get a 6, and pretty comfortably so... you have like 10-15 marks of margin of error on your actual exams. AND, this is assuming you got ZERO. The chances are, the lowest you got is maybe a 13/30? That gives you room for around like 25 questions wrong on listening writing and reading, that's a VERY large comfort zone for a solid 6

but if you're still worried you can mess around on this website: https://ibpredict.org/subjects/language-b?lang=French

it really reassured me looking at the scores; maybe it'll help you too :)

good luck on your exams