How do i make a surface GUI change a bricks transparency Then change it back?

How would i do this. i am somewhat new to scripting? its for a coaster

This isn't a request website. I will, however, point you in the right direction.

First you should add a TextButton. Then, listen for a MouseButton1Click event and set the Transparency of your part. Wait a few seconds, then set it back.

If it still doesn't work, post your code here and we will help.