Understanding tech basics

Hi 🙋🏻‍♀️ Non techie here. It might be wrong channel, but I still would like to ask 🙂 As somehow, who had no knowledge in tech, but wants to understand the basics, maybe as for PM or PO role, what would you say makes a good PM/PO good in their role? Would you like the PMs to understand the code( if they are no code) ?