Have you ever gotten an email from someone you don't know, saying that they need your help to move some money out of their country? This is called a Nigerian scam.
The way it works is that the person who is sending the email is pretending to be someone else, usually someone who has a lot of money. They will tell you that they have all this money, but they can't get it out of the country themselves.
So they will ask you to help them. They might say that you can keep some of the money for yourself, but first you need to send them some money to help with some expenses.
But the truth is that there is no money. The person who is sending the email is just trying to trick you into sending them money.
It's important to remember that you should never send money to someone you don't know, especially if they are asking for it in an email. If you think you might have received a Nigerian scam email, you should delete it right away and not respond to it.