Что написать чтобы: количество товара умножалось бы на его цену (тоже есть в массиве goods, он вложенный, заметьте!) и прибавлялось к суммарной стоимости total.
#program Little Internet Shop

users = [
'Anna',
'Bob',
'Veronika',
'Matthew',
'Lucas',
'Vladimir',
'Michael',
'Helena',
]

goods = [
['Apples', 70],
['Bananas', 30],
['Sugar', 45],
['Tea', 50],
['Coffee', 95],
['Ice cream',150],
]

name = input('what is your name: ')

print('Hello, ' + name)

something = input('What do you want to buy: ')

count = input('How many: ')

print('You want to buy ' + str(count) + ' ' + something)

total =

print('It will cost you ' + str(total) + ' rouble(s)')

users = [

'Anna',

'Bob',

'Veronika',

'Matthew',

'Lucas',

'Vladimir',

'Michael',

'Helena',

]

goods = [

['Apples', 70],

['Bananas', 30],

['Sugar', 45],

['Tea', 50],

['Coffee', 95],

['Ice cream',150],

]

name = input('what is your name: ')

print('Hello, ' + name)

something = input('What do you want to buy: ')

count = int(input('How many: '))

print('You want to buy ' + str(count) + ' ' + something)

for i in range(len(goods)):

if goods[i][0]==something: price=goods[i][1]

print(str(price))

total = price*count

print('It will cost you ' + str(total) + ' rouble(s)')