I will help you. First of all have you chosen an npc to fight? You should be selecting this one:
So you either add npc via nearby npcs (click Add Npc) or if you are starting the bot while away from npcs you can just type the npc name you wish to fight, e.g. "Seagull" and the bot will search for the nearest seagull on the map.
If you already have chosen an npc, then it's worth looking at the console logs (bottom right of osbot client -> click -> copy all -> paste here) the bot may be telling you something, or there may be an instruction/error.