No. PPSSPP only plays PSP games. Black Ops 2 was never released on PSP.
To download the Call of Duty: Black Ops 2 PPSSPP file, you will need to find a reliable source that provides the game's ISO or CSO file. Please note that downloading copyrighted content without ownership may be against the law in your region. Call Of Duty Black Ops 2 Ppsspp File Download
The Ultimate Guide to Call of Duty: Black Ops 2 for PPSSPP: Can You Play It? Call Of Duty Black Ops 2 Ppsspp File Download