Не помня условието, но ако не са ти сгрешени цифрите може би "Sofiq" трябва да е "Sofia"

Zdravei kolega, zapoviadai moeto reshenie.dano da ti pomogne

package SlojniLogicheskiProverki;

import java.util.Scanner;

public class KvartalnoMagazinche {
    public static void main(String[] args) {
        Scanner console = new Scanner(System.in);
        String product = console.nextLine().toLowerCase();
        String town = console.nextLine().toLowerCase();
        double quantity = Double.parseDouble(console.nextLine());
        double price = -1;
        double totalPrice = -1;
        if (town.equals("sofia")) {
            if (product.equals("coffee")) {
                price = 0.50;
            } else if (product.equals("water")) {
                price = 0.80;
            } else if (product.equals("beer")) {
                price = 1.20;
            } else if (product.equals("sweets")) {
                price = 1.45;
            } else if (product.equals("peanuts")) {
                price = 1.60;
            }
        }
          else if (town.equals("plovdiv")) {
            if (product.equals("coffee")) {
                price = 0.40;
            } else if (product.equals("water")) {
                price = 0.70;
            } else if (product.equals("beer")) {
                price = 1.15;
            } else if (product.equals("sweets")) {
                price = 1.30;
            } else if (product.equals("peanuts")) {
                price = 1.50;
            }
        }
         else if (town.equals("varna")) {
            if (product.equals("coffee")) {
                price = 0.45;
            } else if (product.equals("water")) {
                price = 0.70;
            } else if (product.equals("beer")) {
                price = 1.10;
            } else if (product.equals("sweets")) {
                price = 1.35;
            } else if (product.equals("peanuts")) {
                price = 1.55;
            }
        }
        totalPrice=price*quantity;
        System.out.println(totalPrice);
    }
}

Ето и  моето решение: https://pastebin.com/YpVJPzaY