It depends. Some states do not issue a 1099-G for the state refund unless the taxpayer itemized on the Federal Return. If you did not itemize, your state tax refund is neither taxable nor reportable. The first matter, then, is to determine if you itemized last year. The following FAQ will assist you: https://ttlc.intuit.com/replies/4767958
If, however, you did itemize, you still may enter your refund information without the 1099-G. Here's another FAQ to assist you: https://ttlc.intuit.com/replies/3301431