WordPress User Meta value variable into Google Gauge Chart

I am trying to insert a Google Gauge chart on my WordPress site created with Elementor using data from WordPress user meta (current logged in user).

Using the code below, the chart is displayed with a hard-coded value of 50, however I need that value to be retrieved from the current user's user meta data field named 'sleepscore'.

My coding experience is very novice, so am not sure if I need to insert something into my theme's functions.php file, and then reference that variable instead of the 50 hard-coded value below?

html
  head

   script type=text/javascript src=https://www.gstatic.com/charts/loader.js/script
   script type=text/javascript
      google.charts.load('current', {'packages':['gauge']});
      google.charts.setOnLoadCallback(drawChart);

      function drawChart() {

        var data = google.visualization.arrayToDataTable([
          ['Label', 'Value'],
          ['Exercise', 50],
        ]);

        var options = {
          width: 200, height: 200,
          redFrom: 0, redTo: 33,
          yellowFrom:33, yellowTo: 66,
          greenFrom:66, greenTo: 100,
          minorTicks: 5
        };

        var chart = new google.visualization.Gauge(document.getElementById('chart_div5'));

        chart.draw(data, options);

      }
    /script
  /head
  body
    div id=chart_div5 style=width: 200px; height: 200px;/div
  /body
/html

I am attaching a link that may be related, but am not sure how to implement.

Show chart in post using data passed as custom field

I believe the WordPress function get_user_meta() could be used, but again not sure how or here to use it. Perhaps something like below, but would this go in functions.php?

$uid = get_current_user_id();
$SLEEPscore = get_user_meta($uid,'sleepscore',true);

Any help would be appreciated.