If you want to change your name on Apex Legends PC, the first thing you need to do is open the Origin client and go to your "Account" page. From there, select the "Edit Profile" option on the right-hand side. In the "Edit Profile" menu, you will see a "Display Name" field - simply delete your current name and type in the new one that you want. Once you're satisfied with your new name, hit the "Save" button at the bottom of the page. That's all there is to it!