如何以更简单的方式将.csv导入多个数组？

I am new to powershell and am writing my first somewhat complicated script. I would like to import a .csv file and create multiple text arrays with it. I think that I have found a way that will work but it will be time consuming to generate all of the lines that I need. I assume I can do it more simply using foreach-object but I can't seem to get the syntax right.I am new to powershell and am writing my first