Frontend Profile - Listing out Radio Buttons
You can access the field using currentUser.fieldHandle; and the 'labels' and 'values' of the field by looping through the options attribute. You can also set the selected state by checking each option for the option.selected property.

&lt;select id="radioButtons" name="fields[myRadioButton]"&gt;
    {% for option in currentUser.myRadioButton.options %}
        &lt;option value="{{ option.value }}" {% if option.selected %}checked{% endif %}&gt;{{ option.label }}&lt;/option&gt;
    {% endfor %}
&lt;/select&gt;