Account verification is like showing your teacher your ID card or birth certificate to prove you are who you say you are. When you want to use a website or app, they may ask you to do something called "verify your account". This means you have to give some information about yourself, like your name, address, or phone number, so the website or app knows you are a real person and not pretending to be someone else.
Sometimes, the website or app will ask you to do more than just give your name and address. They might ask you to take a picture of your ID card or send them some documents. This is because they want to be extra sure you are really who you say you are. Imagine if you were playing a game with your friends, but someone pretended to be you and cheats! That wouldn't be very fair, so websites and apps want to make sure everyone is honest and plays by the rules.
Once you have verified your account, you can use the website or app just like normal. You don't have to keep proving that you are who you say you are every time you use it. By verifying your account, you are helping to make the site or app a safe and fair place for everyone.