im tryin to make it so when you touch a part, it becomes transparent and when it becomes transparent it will become completely invisible

local e = "asdusad"
game.Workspace.Part.Touched:Connect(function()
    game.Workspace.Part.Transparency = .7
    if game.Workspace.Part.Transparency == .7 then
        e = true
        if e == true then 
            game.Workspace.Part.Transparency = 1
        elseif e == false then
            game.Workspace.Part.Transparency = 0
        end
    end
 end)

How does this code make any sense logic-wise?

You assign game.Workspace.Part.Transparency = .7.

Then if game.Workspace.Part.Transparency == .7 (which is always true because you just assigned that value) you assign e = true and after that if e == true (which again is always true as you assigned that value) you assign game.Workspace.Part.Transparency = 1.

This code is equivalent to:

local e = "asdusad"
game.Workspace.Part.Touched:Connect(function()
   e = true
   game.Workspace.Part.Transparency = 1
end)

Everytime this event handler is triggered you make the object opaque.

You need to only make it transparent if it is opaque and make it opaque only if it transparent.