function add_payout_field( $meta_fields ) {

    $meta_fields['payout'] = array( 'label' => 'Stripe Payout', 'group' => 'woocommerce' );
    $meta_fields['pp_payout'] = array( 'label' => 'PayPal Payout', 'group' => 'woocommerce' );

    return $meta_fields;

}

add_filter( 'wpf_meta_fields', 'add_payout_field', 10 );

function get_payout_data( $order_data, $order ) {

    $order_data['payout'] = get_post_meta( $order->get_id(), '_stripe_net', true );
    $order_data['pp_payout'] = get_post_meta( $order->get_id(), '_paypal_net', true );

    return $order_data;

}

add_filter( 'wpf_woocommerce_customer_data', 'get_payout_data', 10, 2 );