Insufficient information, even if you're agnostic as to the means of running your "3000 scripts."

• Is this even remotely a Perl question -- ie, are you looking for a way to control the mechanize scripts with an overarching Perl parent... or something else.
• What's your target OS? Does it have cron or a comparable scheduler?
• How long does each script take to run? Does that vary significantly from script to script? What provisions have you made (cf, next question) for a script that can't/doesn't complete its run?
• Is there any requirement that the scripts run sequentially?
• Are you abiding by any relevant ToS?

These may help you reformulate your question: On asking for help and How do I post a question effectively?.