u/DapperTrack13

I'm a Wrapper in the bakery. The last 4 weeks I've been helping another store, mostly Sundays & occasional weekdays. So far I've been over there for 6 shifts. My coworker mentioned I can get paid for the mileage commute, which is only about 20 miles. I'm curious as to how I go about that & if there is a time limit on it since it's been going on for about a month, could I still request for that past time?