don’t need any
Create a data type called Survey
Create a reusable element called Survey
In the reusable element put the text you want to show to user. Put a repeating group that is type numbers 0-10 works well. Setup function to save the value to the database when the user clicks the number and then a button of submit.
Make the reusable element a floating group. Float relative to bottom. Put onto pages you want the survey to be shown to user. Set up conditional triggers for when you want the survey shown.