Game Level

I am working on a match 3 game similar to Tsum Tsum. Can someone suggest on how to develop a scoring system for multiple levels for this kind of game? I mean how to design a level(for example: Target score 1000 in 60 sec in level 1, target score 5000 in 120 sec). Do i need to manually imagine and give a target score for each level? Is there any algorithm or a tool that can be a help in designing these levels with an increasing difficulty level?