In sp2013, I have a variation label I want to delete. Is the process to go to variation settings and to delete the label, or do I need to delete the sites first and then delete the label?
To delete the variation label, you could go to the site settings->Site Collection Administration->Variation labels->Delete the variation label.
If you delete the variation label in the Variation labels list, then the variation will no longer reflect any changes or additions you make to the source site.
You can still use the site for other purposes. If you want to delete the site, you could delete the site.