If the IRS needs your 2019 tax return information to make a stimulus payment, the will not make the payment until your 2019 tax return has been completely processed. The IRS is way behind in processing returns.
If you are getting a refund, you can track the status of your refund using this link: https://www.irs.gov/refunds
See this article for how the tax return processing works: https://www.irs.gov/refunds/tax-season-refund-frequently-asked-questions
Track the status of your stimulus payment at this portal: Get My Payment
See these Q&As for more info: https://www.irs.gov/coronavirus/economic-impact-payment-information-center