when i export videos the error 403 occurs

Hello,
Could you please provide more details about your process? Are you publishing directly to YouTube or exporting locally?
From what I understand, it seems you're encountering a "quotaExceeded" error related to YouTube's API during export. This indicates that the API requests made by Premiere Pro have surpassed YouTube's quota limits. 
 
Some short steps to address the "quotaExceeded" error related to YouTube's API during export:
Check Quota Usage:
Go to the Google Cloud Console.
Navigate to API & Services > Dashboard and review your YouTube Data API quota usage.
Request More Quota:
In the Google Cloud Console, go to IAM & Admin > Quotas.
Locate the YouTube Data API quota and request an increase if necessary.
Optimize API Requests:
Ensure that your API requests are efficient and minimal to avoid hitting the quota limit.
Verify API Key:
Make sure you are using the correct API key with appropriate restrictions.
Try Exporting Locally:
Export the project locally instead of directly to YouTube to bypass the API limit temporarily.
Wait for Quota Reset:
Quotas typically reset daily. If possible, wait until the quota resets and try again.