Why is my remote event not getting received?

local tool = script.Parent
local detector = script.Parent.Handle.ClickDetector

local function pickup(player)
	script.Parent.Pickup:Play()
	tool.Handle.Anchored = false
	tool.Name = "Crowbar"
	tool.Parent = game.Workspace[player.Name]
	game.Workspace.BasementDoor.DoorBasement.ProximityPrompt.Enabled = true
	game.ReplicatedStorage.CrowbarText:FireClient(player)
	print("test 1")
end

detector.MouseClick:Connect(pickup)

different scripts

local textlabel = script.Parent:WaitForChild("TextLabel")

local function typewriter(object,text)
	for i = 1,#text,1 do
		object.Text = string.sub(text,1,i)
		wait(0.06)
	end
end

repeat wait(0.01) until game:IsLoaded()

wait(40)

typewriter(textlabel,"I don't have a good feeling about this place...")

wait(10)

textlabel.Text = ""

game.ReplicatedStorage.CrowbarText.OnClientEvent:Connect(function(player)
	print("working")
end)

Remote events works between client sided scripts and server sided scripts. Using a remote for the client sided script to anotherclient sided will print nil. Try use server script instead.

To use an Event to pass arguments between two clients, you'll have to make use of a BindableEvent. Replace FireClient with Fire and OnClientEvent with Event.