Switchboard is just the container application for Switchboard Plugs, which provide the actual settings for various hardware and software.
You'll need the following dependencies:
Run meson
to configure the build environment and then ninja
to build
meson build --prefix=/usr
cd build
ninja
To install, use ninja install
then execute with io.elementary.settings
sudo ninja install
io.elementary.settings
Documentation for LibSwitchboard is available on Valadoc.org