It appears you've missed the deadline for submitting your VAT F form for June of FY 17-18. While chances are slim, you may be able to submit it late. You'll need to approach your local LGST office or jurisdiction's AO for guidance, as procedures vary by state. Consulting a tax advisor is highly recommended to navigate this situation.
29 April 2020
Which state VAT ? Upload online details in vat portal provided you would have declared in your return f form sale. Approach LGST office of your jurisdiction.
08 May 2020
It depends on state to state. Only your AO can guide you on the same. Do make a visit or have a tax consultant to do and check further on this. Chances are very less.