If the theme is to be used in another domain within the same hosting, you can simply do the following:
mytheme)from your development site (say we refer to it as domain1).
/domain1/prestashop/themes/to your production site (for example, refer to it as domain2) at
modulesdirectory in your development site to
/themes/ domain2/modules/or create a new module directory within the
(mytheme)as your active theme. Click on the Save button.