Remote access — the ability to control a computer from a different location over the network — might not be something you need to use every day. However, it does come in handy in certain situations.
Remote desktop and VPN are different - RDP controls computers remotely, VPN connects to a home network. Choose a remote desktop app like TeamViewer, RustDesk, or Chrome Remote Desktop for easy access.
Headless Mac mini remote setup uses Jump Desktop virtual screen with BetterDisplay; free BetterDisplay option, full-screen iPad view.