ujust script and there's a note in their wiki about MSI motherboards (I've got the MSI MAG B850 Tomahawk Max Wifi):Writing to the superio registers requires either being root or setting the "CAP_SYS_RAWIO" permission. You can set this by using this command:
sudo setcap cap_sys_rawio=ep ./openrgb
Please note that this will only work on the native executable, appimages won't work. Additionally, if you've installed openrgb, apply the command to whichever path the executable was installed on.