Selected 5

import 'package:flutter/material.dart';
import 'package:gap/gap.dart';

final listTopping = [
  ('Tomato', false),
  ('Soyu', false),
  ('Sledri', false),
  ('Coconut Sprey', false),
  ('Mayonaise', false),
];

Column(
  crossAxisAlignment: CrossAxisAlignment.start,
  children: [
    const Padding(
      padding: EdgeInsets.symmetric(horizontal: 16),
      child: Text(
        'Topping:',
        style: TextStyle(
          fontWeight: FontWeight.bold,
          fontSize: 14,
        ),
      ),
    ),
    const Gap(10),
    ...listTopping.map((e) {
      return CheckboxListTile(
        value: e.$2,
        onChanged: (value) {
          if (value == null) return;
          int index =
              listTopping.indexWhere((topping) => topping.$1 == e.$1);
          if (index == -1) return;
          listTopping[index] = (e.$1, value);
          setState(() {});
        },
        title: Text(
          e.$1,
          style: const TextStyle(
            fontWeight: FontWeight.w400,
            fontSize: 14,
          ),
        ),
        controlAffinity: ListTileControlAffinity.leading,
        contentPadding: const EdgeInsets.only(left: 10, right: 16),
        dense: true,
        visualDensity: const VisualDensity(
          horizontal: VisualDensity.minimumDensity,
          vertical: VisualDensity.minimumDensity,
        ),
      );
    }),
  ],
),