1 - Install Better Discord → https://betterdiscord.net/home/
2 - Download NitroEmoteAndScreenShareBypass.plugin.js → https://github.com/oSumAtrIX/BetterDiscordPlugins
3 - Open Better Discord and go to user settings, open plugins and open Plugins folder, then drop it there and enable it
4 - Done, now you can share screen using 1080p and 60 fps without nitro.
Enjoy!