The Battlefront 2 Progression update, which will release next week on March 21, revamps the whole system...Star Cards will no longer be found in crates at all. "Instead, you’ll earn experience points for the classes, hero characters, and ships that you choose to play in multiplayer," reads the press release..."If you earn enough experience points to gain a level for that unit, you'll receive one Skill Point that can be used to unlock or upgrade the eligible Star Card you'd like to equip."...
https://www.pcgamer.com/battlefront-2-progression-update-premium-currency-crystals/
https://www.pcgamer.com/battlefront-2-progression-update-premium-currency-crystals/