Go to Server Manager

The go to tools and open

Active directory administrative Center

Go to Deleted Objects OU Open the deleted Objects OU

Then choose the object you want to restore and the location

Note: you must enable the Recycle bin Option before you deleted the object

For enabling the Recycle Bin

https://profadmins.com/2013/02/28/enable-the-recycle-bin-on-server-2012/