How to use Chocolatey

Chocolatey Software | Installing Chocolatey

Set-ExecutionPolicy AllSigned (or Bypass)

Set-ExecutionPolicy Bypass -Scope Process -Force; [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072; iex ((New-Object System.Net.WebClient).DownloadString('https://community.chocolatey.org/install.ps1'))

to get the installed location of the 7zip executable file

Get-Command 7z.exe | Select-Object Definition