Did you mail your return or efile it? If you mailed it 3 months ago they should have started working on it by now. If you just mailed the last month or 2, they are not processing mailed returns right now. The mail is stacking up in trailers at the IRS.
See this IRS page for the latest information
https://www.irs.gov/newsroom/irs-operations-during-covid-19-mission-critical-functions-continue
