Whenever you play Battlefront 2 in the bottom left corner of the home screen you will see a message that says “Daily Crate” and you can select this then on the next screen you will be able to open your one daily crate. The reward when opening this crate everyday is 500 credits and you can use this for things such as buying new hero skins, upgrading your cards and purchasing new emotes.
This is a way for EA/DICE to encourage you to log into the game on a daily basis and keep playing it however the reward does seem a little low in relation to the prices of things that you can buy with it, in our opinion!