Take it again, if you have career aspirations shoot for >95% on all writtens.

They'll probably never even ask, but if they do be honest. You'll win more points for honesty than you'll lose for flunking a written.

But don't lie...it's possible there's a record of that in your FAA file, and some airlines use FOIA to obtain more than what PRIA will show, so you never know.