Okay kiddo, when someone becomes the President of the United States, one of the things they promise is to create more jobs for the people who live there. That means they want to help more people find work so they can make money and buy things they need like food and clothes.
Now, the President doesn't actually create the jobs themselves. What they do is work with other people and companies to try and make it easier for businesses to grow and hire more workers. They might also create new programs or projects that need people to work on them, and that can create new job opportunities too.
Sometimes, it can be hard to know exactly how many jobs a President has created during their time in office because there are a lot of things that can affect how many people are working. For example, if there's a big recession or economic downturn, it might be harder for people to find jobs no matter what the President does.
But generally, people like to look at the overall trend of job growth over a President's term. If more and more people are finding jobs as time goes on, that's a good sign that the President has been doing things that are helping the economy grow and create more jobs.
So even though the President doesn't personally make jobs appear out of thin air, they do play an important role in helping more people find work and make a living.