I moved from VA to NV. TT is requiring I fill the 760py for part year resident. Form asking for TP State Refund. Where would I find that info? Do I calculate? If so,how?

I lived in Va from Jan-May and came to NV. Turbo tax will not let me file my state tax until I have entered the correct TP state refund in the Schedule of Income section. Where would I find that information? Do I have to calculate anything?