My impression of that scene was that poor Moe just thought Mr Gold was pissed about the robbery, so when he started ranting, Moe had no idea what he was on about or why he was being beaten. I don’t think he remembers ever having a daughter, though I guess if his Storybrooke memories at all mirror his Fairytale memories, he’d think he used to have a daughter who had gone missing and/or died.
For me, the most compelling thing about the scene is, “My fault, what are you talking about my fault? You shut her out. You had her love, and you shut her out. She’s gone, she’s gone forever, she’s not coming back, and it’s YOUR fault! Not mine! You are her father!” I know he’s all scary ragey in that moment, but I just wanna hug him, coz you know that those lines were directed at himself as much as they were at Moe. He ends by bringing up that he was her father because he was trying to transfer all the blame onto Moe, even though really, he still blames himself for Belle’s fate.