The term set execution policy not recognized

When first time of power shell were disabled there execution policy. so let check first

>Get-ExecutionPolicy

Restricted

// if it show restricted means, that was the problem. you have to enable
there are four types
Restricted - No scripts can be run. Windows PowerShell can be used only in interactive mode.
AllSigned - Only scripts signed by a trusted publisher can be run.
RemoteSigned - Downloaded scripts must be signed by a trusted publisher before they can be run.
Unrestricted - No restrictions; all Windows PowerShell scripts can be run.
>Set-ExecutionPolicy RemoteSigned


or if you get signature error then you need to type

Set-ExecutionPolicy -Scope Process -ExecutionPolicy Bypass

now you can able to execute your power-shell script.