As it stands no matter what i do i cant not get my Class 20 moving (Class 20 Advanced)
Have you had a chance to go through the pdf manual included? That should be in your \Steam\steamapps\common\RailWorks\Manuals\EN folder.
You're also welcome to check our FAQ's for the Class 20 Advanced:
Alternatively feel free to submit a ticket and we'll see where you're getting stuck.