Hi @robinteine
Here is my complete Solution:

This basically get's a file called "Document.cocx" and then saves it to the same folder as file-<AccountName>-<Year>.docx.
If this was the form submission:

You would have a file called file-AccountName-2020.docx in the same folder.
Note: The response ID bit you were stuck with is in dynamic data, be sure to expand it all or use the following expression:
items('Apply_to_each')['resourceData']['responseId']If you found as helpful please mark as thumbs up.
If this is the solution, please mark as the solution.
Any other questions, just ask.
Thanks, Alan