Hi
Do both these sentences mean the same (thing)
1. If you paid the amount, we would delivered the goods.
2. If you had paid the amount, we would have delivered the goods.
They do not have the same meaning. Sentence 1 talks about a situation which has not yet happened. In other words the money has not been paid and the goods are still waiting to be delivered. This delivery will only take place if the money is paid.
Sentence 2 talks about the past and something which did not happen. The money was not paid and therefore the goods were not delivered.
Both sentences out of context sound a little strange to me without something following 'the amount'.
I would expect something like:-
The amount due/owed