By default, when you activated theme. Your homepage will display your recent posts and you can change its option. From your admin sidebar Settings > Reading > Front page displays select “Your latest posts”. You can also change number of blog posts per page there too.
You can also change your homepage content to a page. From your admin sidebar Settings > Reading > Front page displays select “A static page (select below)” and select a page you want to use as homepage.
Since this option works with any default WordPress pages. So you can create a page using “Content Builder”, shortcode or any HTML too.
Setting Gallery as Homepage
Please make sure that you have created a Fullscreen Cover Gallery in WordPress Dashboard -> Galleries. Do not forget to add a Featured Image as well, otherwise the Gallery will not show up properly.
After that, please go to WordPress Dashboard -> Pages -> Add New and on the right side you will see a Page Attributes panel.
In there, please choose the Gallery page template. Now scroll a bit up and in the Page Options panel there is a Gallery option as well. From there, please choose the newly created Fullscreen Cover Gallery and Publish the page.
If everything is done correctly, then all you have to do is go to WordPress Dashboard -> Settings -> Reading and add your newly created as a Static Front Page.