powershell help report html

Question

Hello,

I'm working on active directory audit powershell script since last year and I would like to have some advices.

I join one file with sample of this script and one file with result of the script.

I would like to know what I need to improve :)

I want to do better code.

Do I use good method to build HTML ?

Thanks you a lot for your help

myscript

result of my script