You just have to add the plugin and activate it to get the benefits of the theme you have purchased.
Just add the theme and activate the Sirat free theme and then add the zip to the plugin folder.
Activate the plugin and follow the steps given in the documentation to display the content.
Kindly please follow the steps given in the documentation.
If you have any questions please let us know.
If you got stuck somewhere then send us the query. If you want we can set up your theme, make a user for us assign administrator role and send us the username and password along with the URL at our support id email@example.com . We have a free theme installation support.