How do I get the duck by my name becuase I looked in settings and it wasnt there and I already caught the duckie :/

if any1 get it, then you didn't have the duckie

You mean duck username icon?

Go to Bites Shop by clicking your HabboBites name on the right corner and click Bites Shop or click here to buy the duck username icon with bites point which you can earn through radio shows, events or playing Guess Who

Only those with the most number of catches by the end of the month will be awarded with the duckie username icon.
Alternatively, you can purchase other username icons via the bites shop!