Why will the sound PanicSong not play?

No sound will play. I have 19 rebirths.

local plr = game.Players.LocalPlayer
local rebirths = plr.leaderstats.Rebirths

if rebirths <= 2 then
	game.Workspace.Audios.NoobSong:Play()
	
end

if rebirths <= 10 and rebirths >= 2 then
	game.Workspace.Audios.ChillSong:Play()
	
end
	
if rebirths <= 50 and rebirths >= 10 then
	game.Workspace.Audios.PanicSong:Play()
	
end
	
if rebirths >= 50 then
	game.Workspace.Audios.FinalCalmSong:Play()

end

You forgot to add .Value after your variable rebirths.

-- So instead of looking like this:
if rebirths <= 2 then

-- Add .Value to each one instead:
if rebirths.Value <= 2 then

Or alternatively include .Value in your variable. This way you won't need to change each one individually

local rebirths = plr.leaderstats.Rebirths.Value