Hello wildan,
KYC is imposed if the user plans to withdraw the amounts higher than the daily limit set which is around USD 300. You can click on your profile icon located at the top-right corner > Profile.
Scroll down and you should see a KYC section with the limits.
I just saw this now, thank you for answering. So for example I win $900 I can withdraw this in 3 days? but if I want to increase my daily limit then I would do KYC may I ask if there's a monthly and yearly limit for users who doesn't submit KYC? or you only have daily limits?