Open Tasks from the main menu. It has three tabs: Daily, Event, and Achievements. Daily tasks refresh every day at 12:00 UTC and fill a bar toward an outfit you choose, Achievements are longer goals with tiers, and the Event tab lists tasks for the event that's running.
How do daily tasks work?
You get a new set of daily tasks at each reset, 12:00 UTC. The Daily tab shows how long is left until the next one. Tasks you haven't finished by then are replaced with new ones, and your list may not match a friend's.
Tap Go on a task to jump to where you can do it.
When a task is done, tap Claim to collect it.
Each claimed daily task adds progress to your outfit bar.
How do I pick the outfit I'm working toward?
In the Daily tab, tap Reveal Options to see the outfits on offer.
Tap and hold the outfit you want to confirm it.
Keep claiming daily tasks. When the bar is full, the outfit unlocks, and you can reveal new options for the next one.
Pick an outfit before you claim a finished daily task, because claiming needs an outfit to add progress to. Outfit options and your choice are final once you confirm, so Support can't swap or reset them. Tap through the options carefully before you hold to confirm.
What are Achievements?
Achievements are longer-term goals in the Achievements tab. Many have tiers: finish a tier's requirement, claim its reward, and the next tier opens. Achievement rewards wait in the tab until you claim them.
What's in the Event tab?
While an event is running, the Event tab lists that event's tasks, and each one gives its reward as soon as you claim it. Claim them before the event ends, because unclaimed event task rewards expire. See When do I get my event rewards? Between events, the tab says the next event isn't live yet.
A daily task sends me somewhere I can't go
Some tasks point to a World or Room. If you're banned from that place or can't get in, skip the task: a new set arrives at the next reset. See Why can't I spin the Lucky Wheel or claim my daily reward?
Still need help?
If a finished task didn't count or a claimed reward never arrived, contact Support through Settings > Support Center. Include your username, the tab (Daily, Event, or Achievements), the task name, and roughly when it happened. A screenshot of the task helps.