Ill be going over how to backup your obs using streamelemenets
first if you have obs studio install obs.live plugin from streameleemnts

Next open obs after streamelemenets is installed and the video view well have a streamelements page you need to login using twitch here before doing the backup.
After you loged in look at the top menus in obs and located the streamelements tab.

Click it and go to the cloud backup option.

Click on backup settingsd and content

Name the backup select all scenes and profiles and click backup this well save everything to the cloud so you never lose your obs settings scenes or profiles ever again.
To restore a backup click streamelements menu go to cloud backup and this time click manage cloud backups and click open on the lates backup to resort your setting if they get lost or you redo your pc ext.
