How do I access the values of my results from a view
You need the method getValue() from each field to get the field data from row:

$view = $variables['view'];
$values = [];
foreach ($view-&gt;result as $row_id =&gt; $row) {
  foreach ($view-&gt;field as $field_id =&gt; $field ) {
    $values[$row_id][$field_id] = $field-&gt;getValue($row);
  }
}


If you want the rendered field use $field-&gt;render($row)