Hi Francesca,
It's hard to answer your question with certainty, as none of us here work for PMI. However, I do think they are more interested in seeing that you have experiences across the 5 process groups, which is definitely possible even if you are not involved in scoping and budgeting. As long as you can demonstrate experiences from Initiating, Planning, Executing, Monitoring/Controlling, and Closing, you should be okay. I think there are many project managers out there who do not manage every aspect (knowledge area) of their projects, so certainly you are not alone in this regard. Best of luck to you!