SharePoint Online: PowerShell to Get List Permissions

Requirement: Get List Permissions in SharePoint Online using PowerShell

How to Get List Permissions in SharePoint Online?
To view permissions applied to SharePoint Online list, follow these steps:

• Navigate to your SharePoint Online List >> Click on Settings Gear >> List Settings
• On List Settings page, Click on "Permissions on this List" link
• This page gets you all permissions on the particular list.
  

SharePoint Online PowerShell to Get List Permissions 
Here is the PowerShell to get list permissions and export to CSV in SharePoint Online

#Load SharePoint CSOM Assemblies
Add-Type -Path "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.dll"
Add-Type -Path "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.Runtime.dll"
  
#Function to Get List Permissions
Function Get-SPOListPermission([String]$SiteURL, [String]$ListName)
{
    Try{
        #Setup the context
        $Ctx = New-Object Microsoft.SharePoint.Client.ClientContext($SiteURL)
        $Ctx.Credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($Cred.Username, $Cred.Password)
      
        #Get the List
        $List = $Ctx.Web.Lists.GetByTitle($ListName)
        $Ctx.Load($List)
        $Ctx.ExecuteQuery()
 
        #Get permissions assigned to the List
        $RoleAssignments = $List.RoleAssignments
        $Ctx.Load($RoleAssignments)
        $Ctx.ExecuteQuery()
 
        #Loop through each permission assigned and extract details
        $PermissionCollection = @()
        Foreach($RoleAssignment in $RoleAssignments)
        { 
            $Ctx.Load($RoleAssignment.Member)
            $Ctx.executeQuery()
 
            #Get the User Type
            $PermissionType = $RoleAssignment.Member.PrincipalType
 
            #Get the Permission Levels assigned
            $Ctx.Load($RoleAssignment.RoleDefinitionBindings)
            $Ctx.ExecuteQuery()
            $PermissionLevels = ($RoleAssignment.RoleDefinitionBindings | Select -ExpandProperty Name) -join ","
             
            #Get the User/Group Name
            $Name = $RoleAssignment.Member.Title # $RoleAssignment.Member.LoginName
 
            #Add the Data to Object
            $Permissions = New-Object PSObject
            $Permissions | Add-Member NoteProperty Name($Name)
            $Permissions | Add-Member NoteProperty Type($PermissionType)
            $Permissions | Add-Member NoteProperty PermissionLevels($PermissionLevels)
            $PermissionCollection += $Permissions
        }
        Return $PermissionCollection
    }
    Catch {
    write-host -f Red "Error Getting List Permissions!" $_.Exception.Message
    }
}
  
#Set Config Parameters
$SiteURL="https://crescenttech.sharepoint.com/sites/Marketing"
$ListName="Documents"
$ReportFile = "C:\Temp\ListPermissions.csv"
  
#Get Credentials to connect
$Cred= Get-Credential
  
#Call the function to Get List Permissions
$ListPermissions = Get-SPOListPermission $SiteURL $ListName

#Get List Permissions
$ListPermissions

#Export List Permissions to CSV File
$ListPermissions | Export-CSV $ReportFile -NoTypeInformation

and the exported CSV file looks like this: