Did you use the wrong address on your federal Form 1040? If so you need to send a change of address to the IRS and ask for a trace of your mailed refund.
CHANGE OF ADDRESS
https://www.irs.gov/faqs/irs-procedures/address-changes/address-changes
If you need to trace a payment that the IRS says has been issued to you, mail or fax a completed IRS Form 3911, Taxpayer Statement Regarding Refund.
Contact your state to see how to get your state refund.
https://ttlc.intuit.com/community/state-taxes/help/how-do-i-contact-my-state-department-of-revenue/00/25573