Help Needed $5 Bill What Looks To Be A Bleed Thro Or Ink Transfer? Not Sure Need Help Identifying

Hi I found this $5 bill and I am new to collecting I tried to see other examples of this but had no luck in finding one. To my research I think this is an error? It has a bleed thro on the back of the bill it is showing the signature from the front of the bill. Yes it is exactly aligned with the signature in the front. I was wondering if something like this is valuable or worth something. I am new and have not had much experience with collecting and I haven't seen something like this before. I tried to research it but I have not seen a signature one, I did see a lot of seals and serials. Also what is the correct term to use for this? Bleed thro? ink transfer? Any information or advice would be greatly appreciated I seen many examples of small spotting/marks inking of serials be sold for some money. I was curious if something like this is valuable ?