it's been so long after last tf2 mods in half-life 2

Have you tried repacking the map through the tf2 console? typing the following usually does the trick (with the bsp in your tf2 maps folder and with mapname replaced with the bsp name of course =D):

bsp_repack maps/mapname.bsp maps/mapname.bsp

I've tried that, But I can't seem to extract any files but the VMF.

BSP Src gives a crap ton of errors when I have extract files on and decomp the map, then it just doesn't extract any of the models, materials, or scripts.

and VIDE just says something along the lines of "unexpected end if file"

In that case, I would personally recommend you decompile the map and copy one of the existing vehicles to your own. They've got specific settings that allow your map's vscript to function properly that I don't recommend doing from scratch.

I was looking specifically for the vscript compatible one, anyway I can't seem to find it in ficool2's vscript_func_vehicle or vscript_vehicle repositories.

The lone campervan's model should already be available in hammer, but if it's specifically the vscript-compatible model you're looking for, that can be found on ficool's vscript vehicles github page 🔥😎👍