Add column to default view

HTH. Limitatons of this script are 

- Written using PnP PoserShell module 

- Can be used for single site

- Add additional column in default view only for existing sites. 

function ModifyView(){ Param(
  [Parameter(Mandatory=$True)]
  [Microsoft.SharePoint.Client.Web]$Web,

  [Parameter(Mandatory=$True)]
  [String]$ViewName, 

  [Parameter(Mandatory=$True)]
  [String]$Columnname

) 
 
$DocumentLibrarys=Get-SPOList |?{$_.Basetemplate -eq "101" -and $_.Hidden -eq $false -and $_.IsCatalog -eq $false }
foreach($DocumentLibrary in $DocumentLibrarys){
$view=$DocumentLibrary.Views
$context.Load($view)
$context.ExecuteQuery()
$view2 = $view | ? { $_.Title -eq $ViewName }
$view2.ViewFields.Add($Columnname);
$view2.Update();
$web.Context.ExecuteQuery()
}
Write-Host "All Doucument Library View Updated"
}

$o365=Get-Credential
$ViewName="All Documents"
$Columnname="Version"
Connect-SPOnline -Url https://<TenantName>.sharepoint.com/sites/teamsite -Credentials $o365
$context=get-spocontext
$web=$context.Web
$context.Load($web)
$context.ExecuteQuery()
ModifyView -web $web -ViewName $ViewName -Columnname $Columnname