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$db_props = CIBlockElement::GetProperty($PRODUCT_IBLOCK_ID, $PRODUCT_ID, array("sort" => "asc"), Array("CODE"=>"FORUM_TOPIC_ID"));
if($ar_props = $db_props->Fetch())
$property_enums = CIBlockPropertyEnum::GetList(Array("DEF"=>"DESC", "SORT"=>"ASC"), Array("IBLOCK_ID"=>$IBLOCK_ID, "ID"=>$ar_props["VALUE"]));
while($enum_fields = $property_enums->GetNext())
{
   $prop_value = $enum_fields["VALUE"];
}

public static function getIblockElement($iblockElementId) {
   $arOrder = [];
   $arFilter = ['ID' => $iblockElementId];
   $arGroupBy = false;
   $arNavStartParams = false;
   $arSelectFields = ['ID', '*'];

   $dbRes = \CIBlockElement::GetList(
      $arOrder,
      $arFilter,
      $arGroupBy,
      $arNavStartParams,
      $arSelectFields
   );

   $element = $dbRes->Fetch();

   $propsDbres = \CIBlockElement::GetProperty($element['IBLOCK_ID'], $iblockElementId, "sort", "asc", array(">ID" => 1));

   $i = 0;
   while ($prop = $propsDbres->GetNext()) {
      $i = !isset($element['PROPS'][$prop['CODE'
      ]]) ? 0 : $i+1;
      $element['PROPS'][$prop['CODE']]['NAME'] = $prop['NAME'];
      $element['PROPS'][$prop['CODE']]['TYPE'] = $prop['PROPERTY_TYPE'];
      $element['PROPS'][$prop['CODE']]['ACTIVE'] = $prop['ACTIVE'];

      $element['PROPS'][$prop['CODE']]['VALUES'][$i] = [
         'VALUE' => $prop['VALUE'],
         'DESCRIPTION' => $prop['DESCRIPTION'],
      ];

      if ($prop['PROPERTY_TYPE'] == 'F')
         $element['PROPS'][$prop['CODE']]['VALUE'][$i]['PATH'] = \CFile::GetPath(intval($prop['VALUE']));
   }

   return $element;
}