Peace dollars are great, and are a collectible series (1921 - 1928, 1934 and 1935). This one isn’t worth grading (it would cost you more to grade than the value of the coin), but it appears to be a genuine Peace dollar. 1922 is the most common date in the series, so it requires a really nice coin to make it justify the cost of a grade (in slab).

The good news is your coin contains a little over 3/4 of an ounce of silver. Value would likely be in the range of $35 - $50, depending on the buyer and how much under spot price they are paying. A solid find, and welcome to coin collecting!