Which foler holding all files of the website

Your site’s content is stored in its database – not in any files. See Moving_WordPress.

Hi,

Thanks for your advice and link.

On local install WordPress;
Setting -> General
WordPress Address (URL) https://localhost/wordpress
Site Address (URL) https://localhost/wordpress

-> Permalinks
Permalink Settings
[check] Default https://localhost/wordpress/?p=123 (ONLY)

I’m now subscribling Deluxe hosting plan on Godaddy. I haven’t built a website on their server yet. My domain is mydomain.com

Whether change both address (URL) to https://mydomain.com/wordpress ?

According to point 8) of https://codex.www.ads-software.com/Moving_WordPress

Move your WordPress core files to the new location. This includes the files found within the original directory, such as https://example.com/wordpress, and all the sub-directories, to the new location.

How can I know the “move” has been completed?

point 12) You must also check and edit ‘store uploads folder’ under Settings > Media or all your new uploads will continue to go into the old folder.

What does it mean “go into the old folder” ?

Thanks

Regards
satimis