Yes (assuming Pesos is supported by an exchange like binance), it's a bit complicated for beginners, though.
Where are your SPS? Inside the game?

Transfer them out to Hive-Engine.com, there swap them for SWAP.HIVE. Withdraw this to your HIVE account. Then move the HIVE to the exchange and swap to fiat.

You might also check gate.io where SPS is trading. Not sure which trading pairs and fiat out options they have, though.