Forex is the market where currency pairs are traded. The value of a currency pair is determined by the relative values of the two currencies involved. For example, if the EUR/USD pair is trading at 1.20, that means 1 euro is worth 1.20 US dollars.
The forex market is constantly changing, with prices going up and down all the time. This is because currencies are always being traded, 24 hours a day, 5 days a week. The main drivers of forex prices are economic and political factors. For example, if a country's economy is doing well, its currency will tend to go up in value. On the other hand, if a country is experiencing political turmoil, its currency may go down in value.
There are many different factors that can affect forex prices, so it's important to stay up-to-date with the latest news and events. By doing so, you can make informed decisions about when to buy and sell currency pairs.