SwiftUI Grid by default does not have a way to add accessibility labels to an entire row. This is an example workaround to provide that feature. It also provides a background view for each row but the colours can be set to Color.clear if you only want the accessibility label.

GridAccessibilityTest.swift

//
//  GridAccessibilityTest.swift
//  FrameUpExample
//
//  Created by Ryan Lintott on 2023-10-22.
//

import FrameUp
import SwiftUI

@available(iOS 17, tvOS 17, *)
struct GridAccessibilityTest: View {
    @State private var rowHeights: [Int: CGFloat] = [:]
    
    var body: some View {
        ScrollView {
            Grid(alignment: .leading) {
                GridRow {
                    Text("Hello")
                        .accessibilityHidden(true)
                        .background(alignment: .leading) {
                            Color.blue
                                .containerRelativeFrame(.horizontal)
                                .frame(height: rowHeights[1])
                                .accessibilityLabel("Hello World World")
                        }
                    
                    Text("World World")
                        .accessibilityHidden(true)
                }
                .onSizeChange { size in
                    rowHeights[1] = max(size.height, rowHeights[1] ?? 0)
                }
                
                GridRow {
                    Text("Hello Hello")
                        .background(alignment: .leading) {
                            Color.red
                                .containerRelativeFrame(.horizontal)
                                .frame(height: rowHeights[2])
                                .accessibilityLabel("Hello Hello World")
                        }
                    
                    Text("World")
                }
                .accessibilityHidden(true)
                .onSizeChange { size in
                    rowHeights[2] = max(size.height, rowHeights[2] ?? 0)
                }
            }
        }
        .scrollBounceBehavior(.basedOnSize, axes: .vertical)
        .fixedSize(horizontal: false, vertical: true)
    }
}

#Preview {
    Group {
        if #available(iOS 17, tvOS 17, *) {
            GridAccessibilityTest()
                .environment(\.dynamicTypeSize, .accessibility5)
        } else {
            // Fallback on earlier versions
        }
    }
}

onSizeChange is a modifier included in FrameUp. Preference keys can be used as an alternative.