Sometimes, if the PDF is very low quality, it may actually be faster to re-type the score by hand than to fix every error from a bad conversion.
From Static Sheet to Editable Score: How to Convert PDF to MSCZ (2021 Guide) convert pdf to mscz file 2021
Converting a PDF to an (MuseScore) file in 2021 remains a process of Optical Music Recognition (OMR) Sometimes, if the PDF is very low quality,