Yes, If you are running version 5.9-3145 or higher then you can do this using the OnBeforeOnline script.
Place this script in any scene that you don't want to be online unless the scorebar is already online.
Adjust the output and layer number in the script to match whichever layer the scorebar normally resides on.
Edit the name of the scene in the script to match the scene name of your scorebar scene.
`dim output as xpOutputFramebuffer
dim scene as xpScene
' abort set online unless we find scorebar on output 0 layer 0
AbortSetOnline = true
engine.GetOutputFramebuffer(0, output)
if output.GetSceneOnLayer(0, scene) then
if scene.Name = "Scorebar" then
AbortSetOnline = false
end if
end if
`
#XPression