dose anyone know what included in the decal pack? i have tsw3 and looking thought the livery editor i don't know what bonus decals where added.
Just checking - have you purchased Deluxe Edition? They're a Deluxe Edition benefit. If so, they'll come up within the shapes section of the Livery Designer, I believe.
Did you double check that it's installed via Manage Game & Add-Ons? It's listed as Train Sim World® 3: Pre-order Decal Pack.
The decal DLC is a separate install though, it's not included in the base game file, so you need to make sure that it is also installed, similar to the individual routes. For me, it showed up shortly after pre-ordering, so despite already having all routes installed, I had to go out of my way to make sure that the decal DLC was also installed, as per the steps mentioned above.