Hi,

Are you talking about website form, if yes, you can create a template which will render the form where user can enter the data, and on the form submit, you can get all the entered values in the form inside the controller which is specified in the action of the form and from here, you can process the inputted values and record into the backend db as per you need.

For more, see: https://www.youtube.com/watch?v=KBVwHkUSnuI

Thanks