I am more into pennies but the treasure hunter in me also eyeballs serial numbers. So that is what i noticed first. Not worth anything but pretty cool in my opinion.
That's a Replacement Note. Known as a Star note. There are many in circulation. There is a website that lets you lookup star notes to see if they are rare or not. Here it is https://www.mycurrencycollection.com/reference/star-notes/lookup Some people try to sell them on eBay for ridiculous amounts of money but in reality they shouldn't have any premium IMHO
In addition to the information provided by paddyman98, I’ll add that your note is poorly centered, which happens occasionally but devalues any potential value. Cool find.