Do I need a screen saver?

It's recommended to prevent display problems if you aren't going to use the computer for a long time and you keep your Mac started. My advice is to activate a screensaver in System Preferences > Desktop & Screensaver, and choose to turn it on after 5 minutes or less

You are welcome

Yo soy de un pueblo al norte de la provincia, pero es una ciudad preciosa y voy con mucha frecuencia. Una maravilla

Another take on this. Just set Display sleep in SysPrefs>Energy Saver to around 5 minutes. No need for a screensaver. I've been running like this for ages with no problems.