I got some golden cards from the paid battle pass… but i’m not sure how i should spend them… When the next battlepass arrives will the battlepass unique weapons be the same or they change?
They will probably be different - you should really only spend any gold tokens on things that are interesting for you.
It is unlikely that any of the items will be particularly powerful - so it you se something interesting I suggest you get it.
Depends on which campaign you are grinding or about to grind. I (Normandy Axis) spent my vehicle and weapon gold orders on the Bf 109 G-6 (Indestructible flaps) and the Kurtz. Very pleased with both.
New weapons and vehicles will most likely be added with new battle pass, but you will have another chance to get golden tickets as well so I would just spend it on anything you might like.
buy whiles which are not 6 stars since it gives only 5 and pick weapon which roll has less fire power or weapon that most rolls can use.