In order to provide the liquidity, you need to be the holder for both tokens in a pair. For example, for the ERP-USDC pair, you need to have both the ERP and USDC tokens in the same wallet. The amounts of tokens required for each kind of these tokens should satisfy the current price ratio between these two tokens. For example, if the current price in Quickswap between ERP and USDC is 1:10 and if you want to provide liquidity for 10,000 ERP, it requires there are 1,000 USDC in your wallet.