How do you check USDT is real or fake?

Could you please explain to me the process of verifying the authenticity of USDT? I've heard of fake cryptocurrencies and I want to ensure that the USDT I'm dealing with is genuine. What steps should I take to confirm its legitimacy? Is there a specific platform or tool that I can use for this purpose? Additionally, what are some telltale signs that might indicate that a USDT token is fake? I would appreciate your insights and guidance on this matter.