Hello, my name is Marco and I am an Independent Advisor. I will do my best to help you.
You can reinstall powershell here, juust follow these steps
https://docs.microsoft.com/en-us/powershell/scr...
for windows 64bits : PowerShell-7.0.0-win-x64.msi
for windows 32bits : PowerShell-7.0.0-win-x86.msi