There are a few different ways to use a polygon on Ethereum. The most common way is to use it as an ERC20 token. This means that you can send and receive transactions with other Ethereum addresses. You can also use a polygon to create smart contracts.
These contracts can be used to store data, create voting systems, or even create new tokens. Finally, you can use a polygon to interact with other Ethereum-based applications. For example, you can use a polygon to buy and sell goods on a decentralized marketplace.