Flash the ISO from releases using BalenaEtcher, Rufus with DD mode, simply throwing the ISO onto a Ventoy drive or by typing sudo dd if=Arch_Installers_ISO.iso of=/dev/sd(your flash drive) bs=4M status=progress oflag=sync
In case you need to start the script manually just type: Arch_Installers
sudo pacman -Syu --needed archiso
git clone https://github.com/zweiler2/Arch_Installers_ISO.git
sudo mkarchiso -rv ./Arch_Installers_ISO
sudo chown -hR "$USER":"$USER" ./out
Once it finishes, your ISO will be available in the out directory.