Hello, Bagwani,
Thank you for contacting us and for using XStore.
1/ Please follow Elementor plugin documentation https://elementor.com/help/how-to-duplicate-an-elementor-page/ Save content as a template then import it according your needs.
2/ Custom CSS code can be used to remove breadcrumbs from Portfolio single project, for example add the next code in Theme Options > Theme custom CSS > Global
.etheme_portfolio-template-default .page-heading {
display: none;
}
Best Regards,
8Theme’s Team