How Do I pass the Option description in Checkboxes to a webform result
It roughly depends on how you build that form element. Form API or Field API? Seems you are with Field API here. In general all you have to do is to provide an associative array for the options where key equals value.

Form API

Here comes a simplified example for Form API. You might want to use $options = array_combine($my_array, $my_array); to build the options array dynamically.

$options = [
  '21' =&gt; '21',
  '22' =&gt; '22',
  '36' =&gt; '36',
];

$form['my_element'] = [
  '#type' =&gt; 'checkboxes',
  '#title' =&gt; 'Choose',
  '#options' =&gt; $options,
]


Field API

With Field API and the list field you have to build the associated array in the Allowed values list like in the following example. Simply divide key and value with a pipe character.

21|21
22|22
36|36