Get/Set Hyperlink Field Values in SharePoint using PowerShell

Add-PSSnapin Microsoft.SharePoint.PowerShell -ErrorAction SilentlyContinue

#Configuration Variables
$SiteURL = "https://intranet.crescent.com/"
$ListName = "UserProfiles"
$FieldName="Picture"

#Get the Web, List Objects
$web = Get-SPWeb $SiteURL
$List = $Web.Lists.TryGetList($ListName)

If($list)
{
    foreach($Item in $List.Items)
    {
        #Get the Hyperlink column
        $Picture = New-Object Microsoft.SharePoint.SPFieldUrlValue($Item[$FieldName])
        #Get the URL of the Hyperlink
        $Picture.URL
        #Get the Decription - Title
        $Picture.Description
    }        
}

Add-PSSnapin Microsoft.SharePoint.PowerShell -ErrorAction SilentlyContinue

#Configuration Variables
$SiteURL = "https://intranet.crescent.com/"
$ListName = "UserProfiles"
$FieldName="Picture"

#Get the Web, List Objects
$web = Get-SPWeb $SiteURL
$List = $Web.Lists.TryGetList($ListName)

If($list)
{
    #sharepoint powershell update hyperlink field
    $Picture = New-Object Microsoft.SharePoint.SPFieldURLValue
    $Picture.Description = "Profile Picture"
    $Picture.URL = "https://intranet.crescent.com/UserProfiles/Images/profile.jpg"
    
    #Add new List Item
    $Item = $List.AddItem()
    $Item[$FieldName] = $Picture
    $Item.Update()  
    
    Write-host "New Item Added Successfully!"
}