Sign With Apple account not completed

I want to create a sign in with apple login page.

But my problem is that I don't get the code from url
https://appleid.apple.com/auth/authorize

It says 'account not completed'.

This is my url what I want to get the code from:

https://appleid.apple.com/auth/authorize
?clientid=com.company.app
&redirecturi=https://www.example.com
&state=a6y4qzyT2yoTboeEH7xwd69ANfYuMA76
&responsetype=code
&responsemode=form_post
&scope=email

Can anybody help me out with this?