This does not have to be a scam. The offer of reply, like, follow automation on social networks is nothing new, only the quality and effect of it are questionable. It is noticeable on X that the number of automated replies is increasing. I guess some people like to discuss with AI on social media.
Have you done it before and your X account grow more or you just think because there are bots posting on X and you think it is not a scam? You should do it first before you should post that it is not a scam. The person will do it for you but let us know if it gives your account any progress.
They know it will not give your account any progress but they are offering it. So how is it not a scam?
If you want to build your X account, it has to be done through hard work of you authentic posting and buy showing people that you are bringing something good that can convince them to follow you.