Forza Horizon 5

Missions award medals, allowing you to progress through the expansion. The easiest way to get the first 5 is to complete the first Hot Wheels story chapter, win all the B class races, and smash your first billboard (there's a freebie in the hub/nexus). If any those give you trouble, you can also pop your first tank balloon, which is located on the southern most outer track below the snowy island.