<form>
<select name="font_id">

<?php

$url = 'https://www.googleapis.com/webfonts/v1/webfonts?key=AIzaSyD6j7CsUTblh29PAXN3NqxBjnN-5nuuFGU';

$response = wp_remote_get( 'http://www.googleapis.com/webfonts/v1/webfonts?key=AIzaSyD6j7CsUTblh29PAXN3NqxBjnN-5nuuFGU', array( 'sslverify' => true ) );

$response = wp_remote_retrieve_body( wp_remote_get($url, array('sslverify' => false )));

if( is_wp_error( $response ) ) {
   echo 'Something went wrong!';
} else {

$json_a = json_decode($response,  true);

$items = $json_a['items'];
$i = 0;
foreach ($items as $item) {
    $i++;
    $str = $item['family'];
   ?>

<option value="<?php  echo $str; ?>"><?php  echo $str; ?></option>;
<?php } } ?>

</select>
</form>