By default Windows 10 and 11 comes with PS 5.1. You can get more modern PowerShell with winget:

winget install --id Microsoft.Powershell --source winget

that's all.

You can check which versions are available with

winget search Microsoft.PowerShell

New PowerShell will be installed additionally to existing PS. In Terminal after restart you will find new profile:

• Windows PowerShell - old profile, PS 5.1
• PowerShell - new profile, PS 7.*

You can always find which PS version you run by running

get-host