Can I clear my TPM to reset event errors or will it destroy all my os oem factory reset partitions and support assist?

Clearing the TPM causes you to lose all created keys associated with the TPM, and data protected by those keys, such as sign-in PIN. 

A TPM is a physical or embedded security technology (microcontroller) that resides on a computer’s motherboard or in its processor. TPMs use cryptography to help securely store essential and critical information on PCs to enable platform authentication. They store a variety of sensitive information—such as user credentials, passwords, fingerprints, certificates, encryption keys, or other important consumer documentation—behind a hardware barrier to keep it safe from external attacks.

Clearing TPM does not wipe your ssd/hdd and would not delete any partitions on the storage drive.

https://learn.microsoft.com/en-us/windows/security/hardware-security/tpm/initialize-and-configure-ownership-of-the-tpm