Horizontal or a vertical lines on your LCD display usually indicates a bad LCD display (the panel itself has a very "partial", or "localized" failure). You can try with another screen to see if the issue insists. Or check out the post - [https://www.minitool.com/news/vertical-lines-on-monitor.html|How to Fix Vertical Lines on Monitor].
If it is the hardware problem, you’ll have to replace the screen.