In order to access the liquidity pool on ApeSwap.finance, you need to first connect your wallet to the platform. Once connected, you can then add liquidity to the pool by providing liquidity tokens (APE) and the asset you want to add to the pool. After adding liquidity, you can then use the liquidity pool to swap between different assets. This process is called liquidity mining and it rewards users with APE tokens for providing liquidity. Additionally, you can also earn rewards by providing liquidity to the pool, which can be used to further increase your liquidity.