How would I disable an object using a bool-value?

A boolean value is basically the check-box you see in properties, with the indicator "check" mark yields true (and the absence of a "check" mark yields false). In a LocalScript, there are two boolean values:

Archivable Value (false = LocalScript won't be copied/cloned, and access to it is going to return nil)

Disabled Value (false = LocalScript will execute its code)

In your case, set the boolean value for the "Disabled" property as "true" (check mark it).

Ta-da! Your LocalScript is now disabled.

But if you want to use a BoolValue (which, in my opinion, is useless since there's one already in the object), you'll have to do something along the lines of this:

script.Parent.BoolValue.Changed:connect(function ()
    if script.Parent.BoolValue == true then
        script.Parent.LocalScript.Disabled = true
    else
        script.parent.LocalScript.Disabled = false
    end
end)

You can make your own boolean values in your script like this (using LocalScript's property itself):

IsTrue = false

script.Parent.ClickDetector.MouseClick:connect(function ()
    if IsTrue == false then
        IsTrue = true
        script.Parent.LocalScript.Disabled = true
    else
        IsTrue = false
        script.Parent.LocalScript.Disabled = false
    end
end)

Working script while using a BoolValue:

script.Parent.IsTrue.Value = false

script.Parent.ClickDetector.MouseClick:connect(function ()
    if script.Parent.IsTrue.Value == false then
        script.Parent.IsTrue.Value = true
    else
        script.Parent.IsTrue.Value = false
    end
end)

script.Parent.IsTrue.Changed:connect(function ()
    if script.Parent.IsTrue.Value == false then
        script.Parent.LocalScript.Disabled = false
    else
        script.Parent.LocalScript.Disabled = true
    end
end)

Schematic

Part (Object) >     ClickDetector (Object)

                    IsTrue (Value Object)

                    Script (Object; where the aforementioned code is at)

                    LocalScript (Object)

I don't know what you script is doing, but the basis of it works like this:

local boolValue = script.Parent.Enab --This is the BoolValue, obviously

function someFunction()
    if not Enab.Value then return end
    --code, will not run if 'Enab's Value is set to `false`
end

Alternatively, if you're not using a function, you can remove that not and put the code you want to disable inside of the if statement:

local boolValue = script.Parent.Enab

if Enab.Value then
    --code, will not ruin is 'Enab's Value is set to `false`
end