Value of US Dollar is directly proportionate to demand for Treasury note, just like the value of goods and services.
There are three ways to measure the value of the US Dollar
Exchange Rates
The Demand for Treasury Notes
The foreign exchange reserves
For these reasons the value of money keep on fluctuating.
How it Affects you?
The value of money affects you everyday from the gas station to the grocery stores. As demand for gas and grocery is inelastic, and it’s not always possible to delay purchases when price rises.
So producers will pass on any extra cost to customers.