Without knowing what kind of error, it's impossible to say. Please post a new question with more details, UNLESS the "error" is the spelling of the word TRUST as TRVST. That IS NOT AN ERROR regardless of any rumors you may have heard.
If the coin is a rotated die error. Value is about $15-$20.
A dollar.
1 dollar
$1.55
1.55
Peace dollars were not made in 1882.
Better check your dates again. The only U.S. half dollar with a 1922 date is a Grant Memorial Commemorative. In circulated condition, it's worth about $60. If you have the variety with the extra star, then about $450
It's not an error, all PEACE dollars have the word "TRUST" spelled with a V because their is no U in the Latin alphabet.
Peace dollars were minted from 1921 to 1935. A dollar dated 1898 would be called a Morgan dollar, after its designer George Morgan.
$50.00
The standard weight of all Morgan and Peace dollars is 26.73 gm.
As of 26 October 2017, the melt value for a Peace silver dollar is $13.13.
A 1922 P brilliant uncirculated dollar peace dollar is worth about $200.00. It is 90% silver and 10% copper.
It depends if this coin is the peace dollar or the Morgan dollar. Both were made in 1921.
40,000 if in vgc
Two kinds of silver dollars were made in 1921, a Morgan dollar & Peace dollar. The easy way to tell the difference is on the back of the Peace dollar is the word peace under the eagle so ask a new question when you know what one you have.
Dollars with "flowing hair" design were only struck in 1794 and 1795. Your coin is simply called a Peace dollar.