depends which state, in WA no scorps at all, in other states as long as your cathing for personal use its no probs but if you plan to sell you need a permit to collect
well i really need to know what species it is, where are you located? crickets should be any more then half the size of the scorp and one of that size a week
Sounds like you have no idea what you're doing.
If I were you I would just let it go considering it's all part of the ecosystem...and you can buy a legal scorpion as a pet after you've researched and know what you're doing and have less chance of it dieing on you.