In MOM 2000 there is no ability to quickly find which rules use the script.
I found a script in MOM/Rules/Advanced/Scripts/ ( or alternatively in DB one point Script table) and my question was which rules run the script.
Use [OnePoint].[dbo].[ProcessRuleToScript] table to find the rules.
select * from [OnePoint].[dbo].[ProcessRuleToScript]
where Idscript='5c4a58cf-709c-4a1f-895a-0aec79ff55a9'(this GUID is just example)
select * from [OnePoint].[dbo].[ProcessRule]
where idProcessRule in
(
select idProcessRule from [OnePoint].[dbo].[ProcessRuleToScript]
where Idscript='5c4a58cf-709c-4a1f-895a-0aec79ff55a9'
)
The SQL gives names of rules, but I wasn't able to find where ProcessingRulePath is stored, so I had to manually expand rules tree to find rules in MOM MMC console