In the Memo or "For" section, write "USCIS I-765" and your SEVIS ID number, found in the in the upper left-hand corner of your I-20. A filing fee is required for many immigration forms.If you do not submit the correct fee, we will reject your form. To fill out the money order, you will need to "Pay to" U.S. Department of Homeland Security. You will receive a receipt notice6 with your case number in the mail from USCIS within approximately 3 weeks. File both forms at the location specified for the other application or petition. For example, if you are filing Form I-765 with Form I-539 or Form I-485. The receipt number is the unique case number the USCIS assigns to each applicant after receiving their petition. A copy of your USCIS receipt notice; or. 3. Accepted methods of payment: U.S. Cash, Money Order, or Cashier's Check.