ReviewSummary

query {
  client(hostname: "minha-loja") {
    products(first: 4) {
      edges {
        node {
          title
          reviewSummary {
            averageStars
            totalReviews
          }
        }
      }
    }
  }
}

{
  "data": {
    "client": {
      "products": {
        "edges": [
          {
            "node": {
              "title": "Camiseta Premium",
              "reviewSummary": {
                "averageStars": 4.8,
                "totalReviews": 15
              }
            }
          },
          {
            "node": {
              "title": "Calça Jeans Slim",
              "reviewSummary": {
                "averageStars": 4.2,
                "totalReviews": 8
              }
            }
          }
        ]
      }
    }
  }
}