Explanation:

- When a court rejects a plaint for non-payment of court fees, it does so because the requirements for institution of the suit are not met.

- According to Section 2(2) of the Civil Procedure Code (CPC), a "decree" is the formal expression of an adjudication that conclusively determines the rights of the parties—except when the plaint is rejected.

- Rejection of plaint under Order VII Rule 11 of CPC is specifically not deemed a decree, but an order.

- A "judgment" is the statement given by the judge with reasons for a decree or order.

- "None of the above" is not applicable as "Not a decree" is the best fit.

Option:2, Not a decree is correct.