What would be your best bet to run a local project.
it has to be simple enough for somebody with minimal computer skills to set up
Whichever way you go, you are going to require a Web Server.
There are several option available In Windows Like Xampp or Wampserver. They both come with Webserver,PHP and database configured. There will be some technical skills required to setup. No just an easy zip extract, but close.
True what Nico says, there is no easy way without either some kind of setup system or one of the LAMP/XAMP stacks, which requires configuration and technical skills, especially due to the variability of possible deployment options ( Windows / Linux / Mac) is each a beast on their own with permissions, firewalls, package management … only to name a few
One also needs to think of scriptcase production environment, and subsequent application updates, which may differ between your installations.
The only other way, which may be a viable option, especially due to your multi OS support, would be to go for a docker image. Yes, its a bit of a pain to get going at first. But after that, whoever does the installation can do a docker pull, and you are covered on the multi OS support (This also lines you up for easy up-scale and external access, if required)
You keep the clients files / database mapped to a local storage, docker image handles your project.
Quick search and I see there are a project or two that should give you a good starting point.
si es local si se puede pero solo lo vas a poder utilizar en la pc que tiene instalado el scriptcase, para ello necesitas tener configurado tu base datos y listo. Creo que en la carpeta de scriptcase hay una carpeta public ahi debes hacer la descarga del zip