My math isn't counting to change the text?

Hey there, a few things with this script:

1. You're putting a Statement as a Event which doesn't work. You could: 1. Make it a normal event or 2. something.Event:Wait() which will wait until the event happens. (More explanation on wiki)

1. When scripting notice how the word "math" changes colors, I believe that is enough of a signal to tell you not to write that as a Variable name, a better name would be something like count

Ok, so how do you fix this script? First we write all the variables that may be used:

local plr = game.Player.LocalPlayer -- this may be useless now but may be useful later on.
local state = script.Parent.State
local count = 1

Ok, now what we want to do is make a function, this function will update the text. This may seem a bit advanced but it's basically a variable for a set of command. Let's called our function UpdateState()

local plr = game.Player.LocalPlayer -- this may be useless now but may be useful later on.
local state = script.Parent.State
local count = 1

local function UpdateState()

end

Now we want to input your if statements in. We also want to add elseif's these bad boys will help reduce your lines.

local plr = game.Player.LocalPlayer -- this may be useless now but may be useful later on.
local state = script.Parent.State
local count = 1

local function UpdateState()
	if count == 1 then
    		state.Text = "Responding"
	elseif count == 2 then
		state.Text = 'OnStation' -- you can also quote with '
	elseif count == 3 then
		state.Text = 'OnScene'
	elseif count == 4 then
		count = 1
	end
end

Now let's do the following:

1. Call the function so it runs
2. Fix your events

local plr = game.Player.LocalPlayer -- this may be useless now but may be useful later on.
local state = script.Parent.State
local count = 1

local function UpdateState()
	if count == 1 then
    		state.Text = "Responding"
	elseif count == 2 then
		state.Text = 'OnStation' -- you can also quote with '
	elseif count == 3 then
		state.Text = 'OnScene'
	elseif count == 4 then
		count = 1
	end
end

UpdateState()

script.Parent.Up.MouseButton1Down:Connect(function() -- avoid :connect and use :Connect
	count = count + 1
	print(count)
	UpdateState() -- update
end)

script.Parent.Down.MouseButton1Down:Connect(function()
	count = count - 1
	print(count)
	UpdateState()
end)

A few notes:

1. this script will WORK to a degree
2. You will have an issue of people spamming the buttons
3. you will have an issue of where count goes into the negatives

Now I will let you solve these on your own.

Hopefully, this helped.

Best of luck developer!