What Can I Do On The Arena Event Screen?

Arena Events (also known as Crime Wave) work exactly like normal Arena missions, with some exceptions. 

On this screen, you will see your current rank in the top-right. You can tap on this to be taken to the leaderboard for this event.

Note that you will only be able to contribute to this event for the available time displayed in the top-right corner next to the location name. Once this time is over, you will be given rewards based on your final ranking.

Also note that you will need to ensure that you have reached the Zone that the event is based on in order to participate. The Zone that you need to reach in Campaign mode will be displayed in the bottom-right corner.

Finally, note that you will only have access to a limited amount of stickers for each event and you won't have access to the full selection as you would in the normal Arena mode.