To earn 100% completion on your bike license you need to complete 38 events.
There are 19 Burning Rides that can only be completed during the daytime and 19 Midnight Rides that can only be completed at night.
They are all automatically added to your map so you don't need to find the events.
I would suggest using the options menu to fix the time of day to either midnight or midday so you can complete one set at a time. This also prevents you riding to the other side of the map to find that you can no longer complete an event as the time of day has changed.
All progress can be tracked in the start menu like in the regular game. These events aren't available when you play online so you need to do this trophy 100% offline.