State tax filing

Both the Resident and Nonresident PTE credits can be entered on the Take a look at Maryland credits screen.   Click through the MD state return until you come to that page.   Once you enter the amounts of PTE credit from your K-1, the amounts will flow to Line 43 of Form 502.    They are under the Business & Investments credits.

TurboTax does support 502CR.   Go back to the Step-by-step interview and enter the amounts of either resident or nonresident PTE credit and TurboTax will add the form to your return.