The status of the federal amended tax return, Form 1040X, that you printed and mailed to the IRS will be on this IRS website - https://www.irs.gov/filing/wheres-my-amended-return
The IRS is not processing any paper tax returns at this time.
Go to this IRS website for information - https://www.irs.gov/newsroom/irs-operations-during-covid-19-mission-critical-functions-continue
The IRS is not currently able to process individual paper tax returns. If you already have filed via paper but it has not yet been processed, do not file a second tax return or write to the IRS to inquire about the status of your return or your Economic Impact Payment. Paper returns will be processed once processing centers are able to reopen.