Here are the steps you need to follow to clone a board.
Step 1. Go to the board you want to clone and click on “Clone”
Final Step. Now click on the “Clone it!” button to clone your board
Note:
You can also clone the board's content and context as well. To do that, select the option “Yes, copy board content!”. Surveys aren't included in this process. For now, you can't clone surveys.