Looking to hide dock and menu bar

Did you ever figure this out?

The Dock autohide setting is actually a boolean value, so setting it to "1" in a defaults command isn't going to activate it. The Dock will ignore the setting. The correct command would be something like defaults write com.apple.dock autohide -bool true But even that isn't going to work since, when a defaults command uses the shortened URL as it's target (meaning not the full path to the plist), it's going to affect the plist for the account running the command, which in the case of a Jamf Pro policy would be root, not the currently logged in user. The Dock settings are user based, so you would probably need to get the logged in user's name and home directory path and then doing the defaults write to their dock.plist.

logged_in_user=$(/usr/sbin/scutil <<< "show State:/Users/ConsoleUser" | awk '/Name :/ && ! /loginwindow/ {print $3}')
/usr/bin/defaults write /Users/$logged_in_user/Library/Preferences/com.apple.dock.plist autohide -bool true
killall cfprefsd && killall dock

It's going to be basically the same deal with the hide menu bar setting. It's a boolean value, so the "1" you see when reading it with defaults indicates true. Something like defaults write /Users/$logged_in_user/Library/Preferences/.GlobalPreferences.plist _HIHideMenuBar -bool true should do it.

It might also be possible to put these settings into a Configuration Profile, but Dock profiles tend to make the Dock immutable. I'm not sure if just setting those values would cause it to become immutable though.