Hi. I filed with Turbo tax on March 1st, 2020 for my federal tax return. I still did not receive any return from IRS. refund status check does not work. Could you help?

I filed electronically. Received state return within 2 weeks. IRS refund status now shows error (it was working last year) I guess since now its for tax 2020...Could you please let me know what should I do. I tried call IRS but never reached a real person