Hi there!
Some of your code isn’t in code tags, could you put them in them please? It makes the code easier to read.
How do I do that?
Edit 
your post.
Highlight the code 
then click this 
button.
Save your edit and then the code should be in code tags!
The Problem
Even though I can’t see the code properly. I can see why it’s not working.
if game.workspace.Lever1.DownLever1.Transparency == 0 then
if game.workspace.Lever2.DownLever2.Transparency == 0 then
if game.workspace.Lever3.DownLever3.Transparency == 0 then
if game.workspace.Lever4.DownLever4.Transparency == 0 then
These do not have an end. if then requires an end when the action is finished.
If this helped, mark it as a solution 
!
Regards,
@David