This article explains how to set up parental controls on Discord.
How to Set Up Discord Parental Controls with the New Family Center
Discord offers some limited parental controls in the form of Family Center, an opt-in tool that parents can use to monitor their children’s Discord activity. Family Center provides parents with an activity dashboard that they can access through their Discord account, along with an email summary of activity that is sent each week.
Here's how to set up parental controls on Discord:
Using the child's Discord account, navigate to User Settings (gear icon).