Hello i want to fetch a specific field to a variable

For that I have Order model:

```
class Order(models.Model):
    product = models.ForeignKey(
        Product, on_delete=models.CASCADE, related_name="product")
    customer = models.ForeignKey(Customer, on_delete=models.CASCADE)
    quantity = models.IntegerField(default=1)
    fname = models.CharField(max_length=100, null=True)
    address = models.CharField(max_length=1000, null=True)
    phone = models.CharField(max_length=12, null=True)
    price = models.IntegerField()
    date = models.DateField(datetime.datetime.today, null=True)
    status = models.ForeignKey(
        Status, on_delete=models.CASCADE, blank=True, null=True)
    payment_method = models.ForeignKey(
        PaymentMethod, on_delete=models.CASCADE, blank=True, null=True)

    total = models.IntegerField(null=True)

```

Here I want to fetch total field in a variable.But I am new for that reason I am really confused about this topic