Hello and Welcome!
If you have not done so already, take the time to read the pinned messages in the "New Shoppers" area on this forum. It has quite a bit of information that will really open up the world of mystery shopping to you. Plus, if you have not found it yet, there is a list of over 200 companies linked at the bottom of this pages. If you are really looking to get into this, you'll want to register with over 100 over them.
Hard work builds character and homework is good for your soul.