You have to create another variable to accumulate the score each owl getting after each race.
Also, you will you if/elif/else to filter the result.
score1 = 0
score2 = 0
If the first owl won the race, then adding 1 score in score1, it would be:
score1 = score1 +1
If the second owl won the race, then adding 1 score in score2, it would be:
score2 = score2 +1
If both owls get a tie, then each owl gets half of the score, it would be:
score1 = score1 +0.5
score2 = score2 +0.5
Or if they get a tie, both owls won't get any score (It's up to you if you wanna add a score or not for a tie)
After all, you will compare the score between score1 and score2 to see which one is greater and become a winner. If there is a tie again, there is no champion.
Hope this helps!