Code Node

const rows = items.map(i => i.json);

// Extract 'Month' and 'Revenue ($)'
const labels = rows.map(r => r["Month"]);
const values = rows.map(r => Number(r["Revenue ($)"]));

// Output for QuickChart
return [
  {
    json: {
      chartData: {
        type: $('Edit Fields').first().json.type,
        data: {
          labels,
          datasets: [{
            label: "Monthly Revenue ($)",
            data: values,
            fill: false,
            borderWidth: 2,
            tension: 0.3,
            pointRadius: 2
          }]
        },
        options: {
          responsive: true,
          plugins: { legend: { display: true } },
          scales: {
            y: { beginAtZero: false },
            x: { ticks: { autoSkip: true } }
          }
        }
      }
    }
  }
];