Yes I did sort it with a work around after also speaking with ScoreApp.
It turns out the API pushes the data from ScoreApp as soon as the quiz is completed and that does not include any forms at the end. So the quiz data was coming through but not the form data.
What I had to do was change the trigger from Quiz completed to Lead Signed Up and keep the rest of my filters relating to the quiz. The other workaround suggested was to move the form to the front of the quiz but we felt that would be a barrier for our clients and we wouldn’t get the same return.
This worked and I have raised a feature request with both ScoreApp and Zapier to have this amended as I know most people will also have a form at the end.