Daily goals the game gives you to achieve for extra XP. Usually something like win 3 online matches, heal 10 teammates, or capture 2 flags. Basic skinner box methods to get the player on the game every day.

I assume they’re similar to the daily quests MMORPGs like wow assigned players back in the day ?

That is, tasks to accomplish once per day to get some rewards; it’s a hook to increase the chance the players come back to the game

Daily quests. Missions that you can repeat every day for some recompense. Maybe they are always the same, maybe you get a different selection from the pool each day.

It’s MMO/Phone Game design that has bleed into every other games as a service to ensure engagement.