I got this email back from Avis after asking them to post the miles
Thank you for contacting the E-mail Customer Service team.
Our records indicate that we submitted the above rentals to Air France
on May ...., requesting 500 points on each of the
rentals. It is our experience that it may take six to eight weeks for
the credit to appear on your account.
Thank you again for taking the time to contact us and we look forward to
assisting you with your future rentals.
Sincerely,
Avis Customer Service