I brought my 10 week year old maltese poodle on Saturday and she hasn't been eating right and she's been sleeping a lot and been doing her "bussiness" everywhere and also isn't energetic I'm getting really worried about her please help :(

If you just brought the baby home, expect her to sleep a lot, that's how pups grow. Be patient and realize she is too young to be energetic, but you can help her be cleaner around the house by taking her outside for a bit each day, so she gets used to the idea of doing her business outside.

Of course she isn't eating right, she has to adjust. What are you feeding her ?

10 weeks or 10 years?
And by her "business" do you mean she is having diarrhea or is she urinating all over the place?
If she is not acting normally and is lethargic or depressed she needs to see a vet.