iPhone 17 Pro Max casing cracked and swollen

First, perhaps understand the Apple Support Community is a user-to-user technical forum. Contributors here are all end-users, just like you. Other than the site Moderators, Apple neither monitor nor participate here. As such, if you hope to reach Apple Support through these forums, you will be disappointed.

You would be best advised to seek assistance directly from Apple Support. You can contact the Support Team using the Support link at top-right or bottom-left of this page.

Alternatively you can initiate and manage your support cases from Apple devices using the excellent Apple Support App. If not already installed, the App can be downloaded from the App Store:

https://apps.apple.com/app/apple-support/id1130498044

You might also visit the Genius Bar at your local Apple Store or Apple Authorised Service Provider (AASP) - where the technicians will be able to assess your iPhone. Here you will be in the best possible place to explore your available options:

Genius Bar Reservation and Apple Support Options - Apple

not from us, we're not apple

these forums are user helping other users like yourself, it's sort of going to a physical apple store and asking other customers their advice

you can read about their warrenty here

Legal - Hardware Warranties - Apple

if the swelling is caused by a defect iphone battery it will only get worse and worse unless replaced

Apple Service and Repair for iPhone - Apple Support

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We want to make sure you reach the right team for help with your device. We recommend that you contact Apple Support directly. Depending on your region, you may be able to reach them here: Get Support.