New To Banknotes Can't Tell The Difference Between One Line And The Line Worth Money

I'm not sure how well you're going to be able to see this but my question is about these lines that go through some of these dollars no matter it being $2,5,10,20s. It's not something that somebody crumbled up into their pocket and that's how they appeared you can see that it happened during the process you can actually feel kind of like you would with a coin, where you would have a die break. I've seen somebody talk about these on YouTube that young crazy kid that talks really fast with blonde hair but problem was he talked really fast and I couldn't catch what he said they were called and how much money they're worth. Do they have to go all the way across to be worth something? Thank you very much for your time.



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