What is the value of a US 5 dollar bill with a red seal on the left side of the bill and one with the seal on the right side?

Without knowing your bills' dates it's not possible to give an estimate. Please check them again and look for questions in the form "What is the value of a (date) US 5 dollar bill?" for more-specific information.

During the mid-20th century the seal position on several different US bills was moved as part of an ongoing series of minor design changes.