Originally Posted by MarkKF
Leave it alone. It can take a few days. If there is a lot of headspace in your bucket or if there is a leak somewhere you might see very little bubbles in the airlock but the CO2 will protect your wine from O2, unless you open it!
As long as you open it slowly, you won't disturb the CO2 blanket overly much. And early in the process, O2 isn't really a problem.
After primary fermentation is over, it pays to be more careful.