Look it up on google. Value of 2020 W nickel - https://www.usacoinbook.com/coins/6429/nickels/jefferson/2020-W/ ($16)
here are the recent eBay sales. Take a couple dollars off to make up for the eBay fees and $16 sounds about right. Ignore the reverse proof listings here. Lowest the regular proof (the one you have) sold for 15 dollars on eBay auctions in early August.
