Hello Broccoli!
Welcome to the 405th Forums, I asked the same questiom when I joined the 405th lol.
In one of the settnings, there is a option that is named "Show Edge ID" where the scaling option is, click on it and the numbers will show.
Also, Molds are very difficult to make, and expensive. I suggest reading all the stickies and if you are really interested, buy some DVDS about it. If you cant afford the DVDS, dont start molding.
Kind Regards!
/Tahu