Such repairs are usually carried out using welding equipment and should be carried out in a car service workshop.
In case of extensive damage, first of all, it should be checked whether there has been any displacement and deformation of the body panels, which could affect the vehicle's handling, or lead to accelerated wear of any of its working components (for example, tire).
Due to the fact that most of the body elements (hood, fenders, etc.) presented in separate sections, their restoration in case of serious damage does not seem appropriate. More often, it is much more reasonable and economical to find a suitable replacement component, which can be found not only in car accessories stores, but also in dismantling or landfills, which can sometimes significantly reduce costs.