TurboTax gets no information about the status of refunds or stimulus payments and the IRS will not acknowledge receipt of your return. If you used the non filer portal to register for your stimulus payment, then the portal efiled a tax return for you with $0 income. You must now print and mail your "real" return to get it accepted. Write "Amended Return" on the top of your form 1040 before mailing your return.
The IRS is currently not processing any mailed returns and hasn't been for some time. It will take a long time for them to process a return that is just now being mailed.
Once they start processing it, you can track the status using the tracking web site: https://www.irs.gov/refunds
You can track the status of your stimulus payment using this portal: Get My Payment
See these Q&As for more info: Get My Payment Frequently Asked Questions | Internal Revenue Service
https://www.irs.gov/coronavirus/economic-impact-payment-information-center