you can find neighbors here also https://forums.ea.com/en/the-simpsons-tapped-out/categories/finding-friends as to how to do it physically if that's what you mean, you can download the Origin client https://www.origin.com/usa/en-us/store/download add friends through there or use the ingame method of clicking on the neighbors screen (the bart milhouse icon) then click the icon to the left looks like an ID badge. Using either method you will need to find players to add using either the list I provided or the one from the post above mine. Good Luck!
Hero-EA Answers HQ Senior Forum Moderator-EA Tapped Out Official Forum I am a volunteer for EA and am not an employee