Okay kiddo, let's see if I can explain this in a way that you can understand.
So, imagine you are going to a toy store to buy a bunch of toys. Instead of paying for each toy separately, the store says you can buy them all together in one bundle. That way, you only have to pay one price for everything.
Bundled payment works the same way, but with healthcare. It's a way to pay for all the healthcare services you might need for one medical condition, like an operation or a hospital stay, with just one payment. This makes it easier for doctors and hospitals to know what they will be paid for their work and can sometimes save money for patients, insurance companies and the government.
Basically, instead of paying for each medical service separately, like someone paying for each toy separately, hospitals and doctors get paid one payment for everything a patient needs for their medical condition.
Now, that's a pretty complex topic even for some adults, but I hope this simplified it enough for you to understand the basics!