How to upload own application in market place confluence
Hi @Sai Durga Eddala ,
Welcome to the community !!
To upload a plugin into Atlassian marketplace, you should be a part of partner.
More details in https://developer.atlassian.com/platform/marketplace/app-approval-guidelines/
https://developer.atlassian.com/platform/marketplace/creating-a-marketplace-listing/
Actually, you don't need to be a partner - you can upload "private" (for want of a better word) apps so that your code can be added to or integrated with your Cloud system.
To sell it on the marketplace, you do need to become a vendor.