Lifetime Earnings are the total earnings in your account from your first day with ShopBack. This will include all pending, confirmed and withdrawn earnings. If your Cashback was rejected, your Lifetime earning will be adjusted too.
Pending Earnings is the total Cashback in your account that is still being validated by the partner store and is yet to be confirmed by them.
Available Balance is the total of all earnings that are confirmed in your account. This is the amount you will be able to withdraw as real money!
Withdrawn is the total of Cashback which has been withdrawn from your account.