Hi @Juztean ,
Either your theme should already provide this, what theme are you using, lets first try that or you will have modify the code in footer liquid .
Please Follow the steps
Go to Online Store (admin sidepanel) --> Themes
In Themes click on customize button next to theme name (i.e debut), this will open theme editor.
Next in the side panel scroll down to footer section, click on the footer dropdown (Be careful don't click on footer text otherwise that will open general footer settings adding pic for ref)
Quick links is the name of a block of type menu, It might be possible that you dont see quicklinks here, then click on add block and select menu, and a new menu block to footer. if you do see quicklinks here click on Quick links it will open up details for menu, like below
Here either you have 3 options
1) if you already have a menu attached like shown in the pic above, then you just need to add a menu item to this menu. For this go back to admin and click on navigation , here all your navigation menus are avilable, find the respective menu and add policies here.
2) if you dont have a menu here, but you have created a navigation menu , then just attach that here.(Also update the menu with menu item)
3) If you dont have a menu here and you have not created the footer menu, then first go back to navigation menu and create a new menu, come back here and attach the menu.
Hope that helps!