No need at all to create 8 identical issues, where one is too much already, as you really should have gone to the Forum instead.
If you don't get any sound out of MuseScore at all, try https://musescore.org/en/handbook/revert-factory-settings-0.
If it is only certain instruments that don't sound, please open a topic in the Forum, mention your version of MuseScore and OS and share the score showing the problem
Comments
No need at all to create 8 identical issues, where one is too much already, as you really should have gone to the Forum instead.
If you don't get any sound out of MuseScore at all, try https://musescore.org/en/handbook/revert-factory-settings-0.
If it is only certain instruments that don't sound, please open a topic in the Forum, mention your version of MuseScore and OS and share the score showing the problem
See also https://musescore.org/en/node/96811