The IRS will not likely set a payment date for your stimulus payment until they have completely processed your tax return. The IRS is way behind in processing tax returns and they are currently not even processing mailed return and haven't been for some time. What is the status of your tax return?
https://www.irs.gov/refunds
Once your tax return is completely processed, you can track the status of your stimulus payment here: Get My Payment
Here are Q&As with more info: Get My Payment Frequently Asked Questions | Internal Revenue Service
Economic Impact Payment Information Center | Internal Revenue Service
