I (Doug Lee) worked on MuseScore3 scripts in January, February, and June of 2020 and contributed to their release on the MuseScore website. Until December, 2021, I also distributed my latest version from this site.
On December 9, 2021, I became aware that the MuseScore site had been, for roughly a year, distributing a slightly updated version of the scripts. I therefore stopped distributing my latest release on this site to avoid confusion.
The MuseScore scripts can be downloaded from a link on the MuseScore Accessibility page.