How do I enter the contests?

Hello @Tieske, Hearty Welcome to the Candy Friends section of our friendly King Community  

I hope you are talking about the contest that are running in Candy Friends category!!  If so, follow my below suggestion...

This is the link for the Contest I am running ---> 
https://community.king.com/en/candy-crush-friends-saga/discussion/262395/contest-by-pummyraj-how-many-cookies/p1

Now, to the part of your question "how to enter" --->  Simply click on above link -->  Read the contest (I am asking for how many cookies were dunked from level #1 to level # 250) -->  Guess how many cookies you have dunked -->  You will see 
an empty comment box in the bottom of the page -->  Simply click on it and write your guess --> Then click on "Reply".

That's it   You are entered into the contest    

Please let me know if you need further assistance / clarification.  If you tap on "Type your Comment", you will be able to write back  

All the Best with your contests!  Have a great weekend!