can I create a gig on essay writing ?
No. That is a violation of the Terms of Service which you will find at the bottom of the Fiverr main page.
To do so would risk your account.
but I can create gig on research and summary ? right ?
Just checked and you already have a gig with essay in the URL so you are already putting your account at risk.
Suggest you delete that gig. Will leave this with you.
That is all from me.
Your question does not even make sense because of poor writing. No matter what criteria exists, you take risks if you offer essays. This is particularly true if you also struggle with writing coherently. Sorry.