If you e-filed and are unsure if your income tax returns were accepted, you may use the e-file status lookup tool to confirm their status.
For additional information, please refer to the FAQ: How do I check my e-file status?
https://ttlc.intuit.com/replies/3319882
If your income tax returns were accepted, then you may check the status of your Federal income tax refund at the IRS website Where's My Refund?
To check the status of your state refund, you may use the State Refund Lookup tool.