GST for exhibition

What is turnover of your business ?.

If your exhibition is temporary period of time and making Taxable supply , then you can take registration as a Casual Taxable person for 90 days or days mentioned in application , For casual Taxable person registration is compulsory irrespective of the turnover . please don't consider my 1st reply .

Okayy, thank you

Criteria
any business activity does not attract gst.
sec 22 of cgst act will enlighten you certainly.

Ye stake registration as casual taxable person.