Hi Brajesh, thanks for your kindness.
I thought I understood your explanation but something doesn’t work, can you see it where it failed? Thanks very much!!

add_action('quform_post_process_7', function (array $result, Quform_Form $form) {
if (function_exists('bp_core_signup_user')) {
    $username = $form->getValueText('quform_7_6');
    $email = $form->getValueText('quform_7_6');
    $password = $form->getValueText('quform_7_7');

    // XProfile fields
       $usermeta = array(
             'field_1' => $form->getValueText('quform_7_10'),
               //correo
             'field_43' => $form->getValueText('quform_7_6'),
        );

             $usermeta['profile_field_ids'] = '1,43';
        $usermeta['password'] = wp_hash_password($password);
   

 bp_core_signup_user($username, $password, $email, $usermeta, $user_id);
update_user_meta( $user_id, 'shop_manager', $new_value );
}

    return $result;
}, 10, 2);

function after_bp_activated_user($user_id, $key, $user) {
    $user = get_userdata($user_id);
    
    $role = get_user_meta($user_id, 'shop_manager');
    if ($role) {
        $user->set_role($role[0]);
    }
}
add_filter('bp_core_activated_user',  'after_bp_activated_user', 30, 2);

Thanks Brajesh! i hope resolve it! Regards!

Hi Brajesh. thanks for your answer!
No, it isnt.do you mean add something like that?

$(document).ready(function(){
  $("button").click(function(){
    $("div").text($("form").serialize());
  });
}); 

I m thinking that the answer is generate like a repeater fields in xprofile but i didnt know how i can begin

Thank you very much Brajesh I am close to being able to do it.
If I succeed, i post it here. Regards!