Contact Us Page
Content
Store information is automatically loaded from Magento’s configuration values.
See Stores > Configuration > General > General > Store Information and Stores > Configuration > General > Store Email Addresses sections.
contact_content block is a plain HTML block.
You can edit it at Magento Admin > Content > Blocks > contact_content block.
Map
contact_map block is built with Magento’s Pagebuilder.
You can edit it at Magento Admin > Content > Blocks > contact_map block.