Is possible to do a personality quiz or outcome quiz so that the end of

Is possible to do a personality quiz or outcome quiz so that the end of the multiple qcm test show a specific message

Yes, that is possible. 

You can use conditional logic to show a different message based on the user's answer. 

How to Change Thank You Message Using Conditional Logic

You can also assign calculation values to your questions, perform a calculation, and show a different Thank You message based on the calculated result. 

How to Assign Calculation Value

How to Perform Form Calculation Using a Widget

Following guides can help you to create your form:

User Guide

How to Create Your First Web Form