dueling grounds roblox scam

so I was playing a game called dueling grounds with my friends and ramdomly some scammer named @rich_bacon1234 came to me and said that pls help me if you will I will give you some robux I said ok cuz I was kind and didn't really need the robux cuz I have like 5k robux and then helped him ( the task was to lose enough times to get money to get the strongest weapon in the game) and when the task was finished he said something like LOL LOSER GET SCAMMED and left so I guess do some research or refuse any request regarding robux?