A tlTemu scam is typically a slideshow on tiktok telling you "how to get rich" or an inspirational slideshow, and then the next slide shows a Temu code which they ask you to enter their code so that they can get more rewards. This is used a lot, and is called a pyramid scheme, where an app tells you that you can earn more rewards, but you must invite someone, which makes their app more popular so that Temu gains revenue off of it.
Anyway, you shouldn't really be using Temu, as it is not a trustworthy app.
A slideshow on tiktok says "want to earn money fast?" Then shows a Temu code. That is a Temu scam.