The fuse rating will be on one of the fuse end caps. You may need a magnifier to see it clearly. Or you may have to remove it from the pcb in order to view it.
The component you point to is a transistor. There seems to be some discolouration of the pcb next to it. It is possible that the pcb tracks have burnt on the reverse side of the board. Take it out and take some close up photos and post them here. It’s pointless guessing at this early stage.