This Vehicleshop is using vehicles table from Database
if your current vehicleshop or vehicle list database is not vehicles you may need to edit the server.lua to make this work, or you can use the vehicleshop.sql.
imo you shouldn’t run a FiveM server if you dont know how to code or dont have a Proper Developer, theres so many servers popping up, but in the end they all have the same stuff.
Just convert it to vRP
and he also said it will work with multiple frameworks at a later state, so just either do it yourself or be patient and actually read what he wrote.