Like we get the mail from envato that,
“unfortunately we found it isn’t at the quality standard required to move forward, and you won’t be able to re-submit this item again.”
my question is that, is there any guide line what and then how to submit, with examples/images methodology of what ENVATO needs to be accepted.
It depends on what you are trying to submit.
Beyond certain technical processes for web build etc. there are no concrete guidelines beyond best practice execution and fundamentals for things like design.
If you are getting rejected then you can share previews here and get feedback - there are several very experienced authors who often comment.