Conditional logic: How can I create a form so my customer can get update on an item using a unique code?

How can I create a form so my customer can get update on an item using a unique code. 

Basically, I want a form that takes one input: a code
Gives an output based on what the code was

Like shipment tracking

Hi,

Thank you for contacting us.

You can use Conditional Logic to configure the settings you described.
With conditional logic, you can hide and display fields based on the user's answers.
You can set a field on the form, let your user enter the code, and then the conditional logic will display configured fields if the code is correct.
For further reference, please see our guides here:
Conditional-logic
Smart-forms-conditional-logic-for-online-forms

If you have any further questions, please let us know and we are happy to help!
Best regards,