Example of how to take a google sheet with names and phone numbers and submits to a form.

submitscriptexmaple.js

function submitForms() {
  // Get the active sheet
  var sheet = SpreadsheetApp.getActiveSheet();

  // Get the data range
  var range = sheet.getDataRange();
  var values = range.getValues();

  // Loop through each row of data
  for (var i = 0; i < values.length; i++) {
    var name = values[i][0]; 
    var phone = values[i][1];

    // Set the URL of the GET submit form replace this with flowtrack form submittion.
    var url = "https://FormUrlGoesHere?name=" + name + "&phone=" + phone;

    // Submit the form using the UrlFetchApp service
    var response = UrlFetchApp.fetch(url);
  }
}