You can use the following cmdlets:

    #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"
       
    #Variables for Processing
    $SiteUrl = "https://<tenant>.sharepoint.com/Sites/<site>"
    $UserName="<user>@<tenant>.onmicrosoft.com"
    $Password ="<password>"
    $ListTemplate = "Survey"
      
    #Setup Credentials to connect
    $Credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($UserName,(ConvertTo-SecureString $Password -AsPlainText -Force))
     
    Try {
        #Function to Get all lists from the web
        Function Get-SPOList($Web)
        {
            $listsToDelete = @()
            #Get All Lists from the web
            $Lists = $Web.Lists
            $Context.Load($Lists)
            $Context.ExecuteQuery()
     
            #Get all lists from the web  
            foreach($List in $Lists)
            {
                #Get the List
                if($List.BaseType -eq $ListTemplate){
                    $listsToDelete +=$Lists.GetByTitle($List.Title)
                    Write-Host "List:" $List.Title " will be Deleted Successfully!" -ForegroundColor Green 
                }
            }
            foreach($listToDelete in $listsToDelete) {
                $listToDelete.DeleteObject()
            }
            $Context.ExecuteQuery()
            Write-Host "The Survey lists are Deleted Successfully!" -ForegroundColor Green 
        }
     
        #Function to get all webs from given URL
        Function Get-SPOWeb($WebURL)
        {
            #Set up the context
            $Context = New-Object Microsoft.SharePoint.Client.ClientContext($WebURL)
            $Context.Credentials = $Credentials
     
            $Web = $context.Web
            $Context.Load($web)
            #Get all immediate subsites of the site
            $Context.Load($web.Webs) 
            $Context.executeQuery()
      
            #Call the function to Get Lists of the web
            Write-host "Processing Web :"$Web.URL
            Get-SPOList $Web
      
            #Iterate through each subsite in the current web
            foreach ($Subweb in $web.Webs)
            {
                #Call the function recursively to process all subsites underneaththe current web
                Get-SPOWeb($SubWeb.URL)
            }
        }
     
        #Call the function to get all sites
        Get-SPOWeb $SiteUrl
    }
    catch {
        write-host "Error: $($_.Exception.Message)" -foregroundcolor Red
    }

[How to get all lists in a SPO site collection using PowerShell][1]

[How to delete a SPO list using PowerShell][2]


  [1]: http://www.sharepointdiary.com/2015/08/sharepoint-online-get-all-lists-using-powershell.html
  [2]: http://www.sharepointdiary.com/2016/10/sharepoint-online-delete-list-using-powershell.html