What is the value of a 2000 US silver dollar?

Answer 1

If you're using the term "silver dollar" to mean one of the small-size Sacajawea dollars introduced that year, it's brass, not silver and is only worth $1.

If you have a large (40 mm) coin that says 1 oz fine silver on the back, it's a bullion coin worth slightly more than the current price of 1 troy ounce of silver. It's sold to collectors and investors rather than being used in commerce; the $1 denomination is artificial.