acf-localizacao.json

[
    {
        "key": "group_63b5c82e80cd6",
        "title": "Localização",
        "fields": [
            {
                "key": "field_63b5d064ffe62",
                "label": "ATENÇÃO!!!",
                "name": "",
                "aria-label": "",
                "type": "message",
                "instructions": "",
                "required": 0,
                "conditional_logic": 0,
                "wrapper": {
                    "width": "",
                    "class": "",
                    "id": ""
                },
                "message": "Acesse o site abaixo para gerar as coordenadas corretas da sua localização:\r\n\r\n<a href=\"https:\/\/gps-coordinates.org\/coordinate-converter.php\" title=\"Gerar Coordenadas.\" target=\"_blank\">Gerar Coordenadas<\/a>\r\n\r\n<sub>* Procure pelo campo <strong>ADRESS<\/strong> e depois clique em <strong>Get GPS Coordinates<\/strong>.<\/sub>",
                "new_lines": "br",
                "esc_html": 0
            },
            {
                "key": "field_63b5d4ca316a9",
                "label": "Latitude",
                "name": "latitude",
                "aria-label": "",
                "type": "text",
                "instructions": "",
                "required": 0,
                "conditional_logic": 0,
                "wrapper": {
                    "width": "50",
                    "class": "",
                    "id": ""
                },
                "default_value": "",
                "maxlength": "",
                "placeholder": "",
                "prepend": "",
                "append": ""
            },
            {
                "key": "field_63b5d4e7316aa",
                "label": "Longitude",
                "name": "longitude",
                "aria-label": "",
                "type": "text",
                "instructions": "",
                "required": 0,
                "conditional_logic": 0,
                "wrapper": {
                    "width": "50",
                    "class": "",
                    "id": ""
                },
                "default_value": "",
                "maxlength": "",
                "placeholder": "",
                "prepend": "",
                "append": ""
            }
        ],
        "location": [
            [
                {
                    "param": "page_template",
                    "operator": "==",
                    "value": "page-localizacao.php"
                }
            ]
        ],
        "menu_order": 0,
        "position": "normal",
        "style": "default",
        "label_placement": "top",
        "instruction_placement": "label",
        "hide_on_screen": "",
        "active": true,
        "description": "",
        "show_in_rest": 0
    }
]

loop-localizacao.php

<?php
  // pega os nossos campos personalizados
  $latitude = get_field('latitude');
  $longitude = get_field('longitude');
  // inicio da verificação
  // verifica se os dois campos estão cadastrados
  if ($latitude && $longitude ) : ?>
  <div class="map-responsive">    
      <iframe src ="https://maps.google.com/maps?q=<?php echo esc_attr($latitude); ?>,<?php echo esc_attr($longitude); ?>&hl=es;z=14&amp;output=embed" loading="lazy"></iframe>
  </div>
  <!-- Inicio do CSS para deixar o Mapa Responsivo -->
  <style type="text/css">
    .map-responsive{
      overflow:hidden;
      padding-bottom:50%;
      position:relative;
      height:0;
    }
    .map-responsive iframe{
      left:0;
      top:0;
      height:100%;
      width:100%;
      position:absolute;
    }
  </style>
  <!-- Fim do CSS -->
  <?php endif; 
  // fim da verificação
?>

page-localizacao.php

<?php
/*
 * Template Name: Localização
 * Template Post Type: page
 */
get_header();
?>
<div id="content" class="site-content container py-5 mt-5">
  <div id="primary" class="content-area">
    <div class="row">
      <div class="col-12">
        <main id="main" class="site-main">
          <header class="entry-header">
            <?php the_title('<h1>', '</h1>'); ?>
          </header>
          <div class="entry-content">
            <?php the_content(); ?>
            <!-- Adicione aqui o loop de localização -->
          </div>
        </main>
      </div>
    </div>
  </div>
</div>
<?php
get_footer();