If you e-filed your income tax return and do not know if they were accepted, you may use the e-file status lookup tool to confirm their status.
Additional information on the topic is located in 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 track your Federal refund via the IRS Where's My Refund? website.
To track the status of your state refund, you may refer to the FAQ: How do I track my state refund?
https://ttlc.intuit.com/replies/3300211