My 2020 macbook Pro is bricked beyond my understanding and Apple wont help because it thinks my serial code is invalid.

What caused part of the storage to drop offline is another discussion, whether that was a corruption, a (partial) storage hardware failure, or had some other trigger. Re-partitioning is an oft-popular way to corrupt a configuration, and errors and corruptions there are best assumed to clobber everything.

With a bricked Mac with Apple silicon M1 processor, start here for recovery:

Revive or restore a Mac with Apple silicon with Apple Configurator 2 - Apple Support

Here is how to erase the internal SSD storage on an Apple silicon M1 Mac:

How to erase a Mac with Apple silicon - Apple Support

This section of the previous article covers what to do if Macintosh HD doesn’t appear:

How to erase a Mac with Apple silicon - Apple Support

As for the serial number, that’s usually included on the packaging, and on the purchase-related receipts and/or purchase email messages, can probably be dug out of the backups, and the internal serial number will be available when the Mac is rebooted, or once the Mac is repaired and rebooted.

LostSylveon wrote:

I dont know how i can use apple converter if i cant pull up any software on my computer.

Is that a piece of hardware i have to have?

I’m here assuming this is a MacBook Pro with Apple silicon M1, and not a MacBook Pro with Intel processor, that assumption based on your reported problems with the recovery sequence you were using. This as the MacBook Pro 13” 2020 was available with either M1 or Intel processors.

The blue text shown here in the Apple forums are hyperlinks to more information. Click on those to view the linked article.

Here again are the links relevant to recovery, and to erasing internal storage, and you will need another Mac to recover an Apple silicon M1 Mac. With a bricked Mac with Apple silicon M1 processor, start here for recovery:

Revive or restore a Mac with Apple silicon with Apple Configurator 2 - Apple Support

Here is how to erase the internal SSD storage on an Apple silicon M1 Mac:

How to erase a Mac with Apple silicon - Apple Support

This section of the previous article covers what to do if Macintosh HD doesn’t appear:

How to erase a Mac with Apple silicon - Apple Support

LostSylveon wrote:

...i cant even power on the thing to see an error loading screen or boot it into recovery mode AT ALL.

So to confirm, you’ve followed the links and have tried using Apple Configurator 2 and have failed?

Mac Apple silicon M1 recovery is very different from Mac Intel recovery.

Look on the bottom of the computer for the serial number.