show vendor earning column

add_filter( 'wcfm_orders_additional_info_column_label', function( $column_label ) {
    if(wcfm_is_vendor()) return 'My earning';
    return "Vendor's earning";
});

add_filter( 'wcfm_orders_additonal_data_hidden', '__return_false' );

add_filter( 'wcfm_orders_additonal_data', function( $column_data, $order_id ) {
    global $WCFM;
    $the_order = wc_get_order( $order_id );

    if ( ! is_a( $the_order, 'WC_Order' ) )
        return __( 'N/A', 'wc-frontend-manager' );

    $order_status = sanitize_title( $the_order->get_status() );
    $order_currency = $the_order->get_currency();
    $commission = $WCFM->wcfm_vendor_support->wcfm_get_commission_by_order( $order_id );

    if ( ! $commission || in_array( $order_status, array( 'failed', 'cancelled', 'refunded', 'request', 'proposal', 'proposal-sent', 'proposal-expired', 'proposal-rejected', 'proposal-canceled', 'proposal-accepted' ) ) ) {
        return __( 'N/A', 'wc-frontend-manager' );
    }

    return wc_price( $commission, array( 'currency' => $order_currency ) );
}, 50, 2 );