Download link to older versions of MuseScore for Linux (3.0.0 to 3.6.2) is missing
P1 - High
S3 - Major
This is the link from the download page: Other versions for all platforms.
It was last updated 2019-10-26, ten months ago. IMV, At the moment there does not seem to be any way to access install files for versions 3.3 to 3.4.