Do you have problems on your PC at this time ?
because if that's not the case, I would recommend to regularly backup with Macrium Reflect FREE Edition
With this type of backup software, you can restore your entire disk as it was when you created the backup (Image),
including all the settings you've created on your system.
It's a real lifesaver when your system fails.
Don't forget to create a Rescue-CD, because otherwise, you cannot restore.
If you still have questions about this software, just ask,
there are enough people here who can help you with that.
If you still want to know how to export Registry settings for programs, I can help,
but it's a lot of manual labor.
And as I can deduce from your question, it's probably not what you're looking for.