macbook pro vertical lines on lcd

Simple. LCD panel failure. Likely will cost around 500 dollars, take it to a apple store to the genius bar

Looks like a graphics chip or LCD/screen problem, best to contact Apple support.

It's a 2015? It'd be way past the warranty, so it doesn't really matter whose fault it was; unless it is covered by a "recall", it will be your penny (dollars), unfortunately.