You want to use a file converter. Even if an app were to offer a “Save As” function that would turn a PDF into a Word file, it would still use a converter. I work with the Soda PDF team and there are a few ways to do it. There is a free online tool. Upload the PDF, download the Word file. The only issue you may encounter with this method is if the PDF contains images and you want to edit the text in those images. If that’s the case I recommend trying Soda PDF Desktop or Online. You’ll be able to convert from PDF to Word but also apply OCR so that the words in the image become editable.
PDF to Word converter PDF in PDF Conversion allows you to convert one or more PDF files to another PDF file.