Create Resource Group using PowerShell

Create Resource Group using PowerShell New-AzResourceGroup

Create an Azure resource group using PowerShell New-AzResourceGroup

# Connect to Azure
Connect-AzAccount
 
$RGName = "test-rg"
$Location = "UK West"
 
# Create resource group
New-AzResourceGroup -Name $RGName -Location $Location

Reference:

Az PowerShell - New-AzResourceGroup
https://learn.microsoft.com/en-us/powershell/module/az.resources/new-azresourcegroup