If you see a green pending icon spinning on the webpage, it means the transaction is being processed and has not arrived at the destination chain.
In most cases, you don’t need to do anything with a transaction that is still on pending status. It just takes time for each transaction to go through. Most of the transactions will go though in just a few minutes. If your transaction is on Polygon network, please expect 20-30 minutes for a transaction to go through as Polygon requires 512 block confirmation for security reason. Each protocol has its own protocol behavior, thus the transaction time varies on different chain.
In some circumstances, if the transaction has been pending for too long (e.g. over one hour), you can go to your wallet and try to speed up the transaction by adding more gas to your transactions. Please see here about how to speed up your transaction.
You may also consider cancelling the transaction if it has been queued on your MetaMask or pending on the source chain. Please see here about how to cancel your transaction.