Best bet is to pray you dont get a ticket. If you get a citation and go to court, explain yourself and hope they go easy on you.

If you realized that you messed up while it all was happening, you probably couldve pulled over, ran back to the bus window, and apologized to the driver.
But that requires time travel to do now.

You might try contacting the bus company for that school district and apologizing to someone there, but if the driver didnt report you and you tell on yourself you might walk right into trouble.