請教我的I-485情況：name checking finished 2 years ago, but 485 i

I just got the response from my Senate today regarding my inquiry of my Name chekc status in FBI. It tured out FBI already processed and finalized the case 2 years ago and forwarded the result to USCIS headquarters.

How come I still didn't get my GC approved? Does this mean the result is not good? Is there anybody having similar experience? How I should proceed further?

Thanks in advance for your suggestions!