I was informed that I will receive 3rd no stimulus payment.

[Jayfus]

So I should be able to file my W2. But when I did. It was rejected by the IRS. The stimulus payment was for $1,400. And the tax refund was for $2,662.

[xmasbaby0]

Your post is not clear.   Was your e-file rejected?   If so then you might be able to fix it and re-file.

You received an email that we cannot see that tells you why your tax return was rejected.  

Some rejected returns can be fixed and re-filed.  Some have “un-fixable” reasons for the rejection and have to be mailed instead. What is the rejection code or rejection message? 

 If it was rejected for AGI—-be aware that many 2020 returns took so long for the IRS to process that your 2020 AGI might not be in the IRS system.   Try using zero instead.

If filing with zero is rejected then file again but select the option that you did not file last year.  The IRS does not see that question and it will allow you to e-file with no AGI question.

https://ttlc.intuit.com/community/agi/help/where-do-i-correct-my-agi-in-turbotax-online/00/26311

If that does not work and you still cannot e-file, then print, sign, and mail your tax return.

[ErnieS0]

As @xmasbaby0 said, your question is confusing. 

If the IRS rejected your return then follow the directions in TurboTax to fix what was wrong or file by mail.

If you are saying the IRS did not give you the third stimulus payment, then it means IRS records show you received your $1,400 stimulus. The IRS will send you a letter explaining that.

You can ask the IRS to trace your stimulus payment.

To start a payment trace:

• Call us at 800-919-9835
• Mail or fax a completed Form 3911, Taxpayer Statement Regarding Refund PDF.

Reminder: DO NOT request a trace prior to the timeframes above. IRS assistors cannot start a trace prior to those timeframes.

To complete the Form 3911:

• Write "EIP3" on the top of the form to identify the payment you want to trace.
• Complete the form answering all refund questions as they relate to your Economic Impact Payment.
• When completing item 7 under Section 1:
  • Check the box for "Individual" as the Type of return
  • Enter "2021" as the Tax Period
  • Do not write anything for the Date Filed
• Sign the form. If you file married filing jointly, both spouses must sign the form.

You will generally receive a response 6 weeks after IRS receives your request for a payment trace, but there may be delays due to limited staffing.