The history tab allows you to see the amount of Contract Points awarded for all contracts, including those in the past. Upon clicking on a certain contract, you will see the contract's name, the date of contract completion, the amount of CS gained, the season, the grade, the number of goals achieved, the time remaining, your egg contribution, and your teamwork level. Your grade, goals achieved, completion time, egg contribution, and teamwork score all contribute to your final Contract Score as described in the formula above.