Hello. Hello.

I’m Nnew ton the web site . I’m new to the website.

You can also say "site" for short

I Have'm doing a challenge, a purpose or amy goal is to speak eEnglish fluently in 31 mayby May 31st. I'm doing a challenge, my goal is to speak English fluently by May 31st.

We say that we "do" challenges. "English" (and all languages/nationalities) as well as the names of the months are capitalized

I Haveam doing a challenge, athe purpose or a goal is to speak english fluently in 31by the 31st of may. I am doing a challenge, the purpose or goal is to speak english fluently by the 31st of may.

You could also say "by May 31st"

BI am doing this because iI want to live in aAmerica in jnext July with m’y family ;. I am doing this because I want to live in America next July with my family.

Try to avoid beginning sentences with "because." "I" and the names of countries are always capitalized

Because i want to live in america in july with m’y family ; Because i want to live in america in july with my family ;

A better way to phrase this would be "Because in July I want to move to America with my family"

I would like to stay in Atlanta. I would like to stay in Atlanta.

Create a coffee shop (healthy) ,I want to open a healthy coffee shop in Buckhead. I want to open a healthy coffee shop in Buckhead.

Beginning a sentence with "create" means you are using the imperative and telling us (the reader) to create something. This would be described as "opening" a business

CAnd create a healthy coffee shop (healthy) , in Buckead And create a healthy coffee shop, in Buckead

And after inEventually, I will expand to thée best place in aAmerica. Eventually, I will expand to the best place in America.

I'm not sure to understand. I think you mean you will begin your business in Buckhead/Atlanta and then later open another coffee shop in a better place, so I edited for that. I would be more specific here and say the city you mean, because there is no universally acclaimed "best place in America."

And after in thé best place in america. And after in thé best place in america.

I'm not sure what you are trying to say here

At the begining I mMy experience is in intéeriorisé design, but I need a challenge for when I was ingo to America. My experience is in interior design, but I need a challenge for when I go to America.

I am lost here as well. To fit the rest of the context of your post, I edited to say that you have been working in interior design and speak about going to America in the future tense. Sorry if this is not what you meant to say