Are there any monetary limits prescribed for compounding of offence under GST

Yes.
The minimum limit for compounding amount is to be the higher of the following amounts:-
• ` 10,000. Or
• 50% of tax involved,
The upper limit for compounding amount is to be higher of the following amounts:-
• ` 30,000 or
• 150% of tax involved.

(ICAI FAQ PUBLICATIONS 06-09-2017 COMPOUNDING OF OFFENCES: FAQ NO. 45)