To Stake follow the below steps mentioned:
Step 1: Click on the 'Scallop Staking' on the top of the page.
New Scallop Chain portal will open.
Step 2: Click ‘Connect Wallet’ in the top right-hand corner of the page to connect your MetaMask Wallet to the platform
Step3: After successfully connecting your wallet, input the amount of SCLP that you would like to stake, select a period of time that you would like to stake for and then click ‘Proceed’.
Step 4: A MetaMask pop-up window will appear. Please follow the instructions to complete the transaction.
Step 5: After successful completion of the transaction, your SCLP tokens will be locked into the platform for the duration of the period selected.
Read more: https://medium.com/scallopx/sclp-staking-earn-up-to-200-apy-2adb715cb0dc