The amount of Vertex for a character

Hello programmers and game developers.

I am a 3D artist, these are the packages I made:

I am making a new package and I created this topic with the desire to upgrade the product better, more suitable for you, help you more convenient during the project development. I’m concerned about the number of vertexes for a character. (Of course, the number of vertexes will make the character more soft, but it will be heavy on the game and I would like to know a relative number for PC and mobile platforms. ). I have consulted a number of forums and there are many comments made but there is no consistency at all, and depending on the Engine they use. Let me know with your Unreal Engine which numbers are the best and most comfortable with you. Thank you and sorry if I post this topic wrong area.