Hi, I bought a wp template from themeforest, but I don’t know how to find wp self inner?
What do you mean “wp self inner”?
Here’s a guide on how to install it https://envato.com/blog/install-themeforest-wordpress-theme/
Also you will get a documentation about the wordpress theme and how to use that theme. So, you can check documentation for more help. Also you can ask any query to theme author by contacting them.
How to contact an author: