I just would like to amend that it is not W7 but W2. Also, Please note that I am considered as resident I guess, since my stay here is more than 180 days.
What form should I use?
Thank you.

You cannot amend the W-2. It is issued by your employer based on what was withheld from your salary.

If you think your W-2 is NOT correct, contact your employer to get him/her to issue a corrected W-2.

I just would like to amend that it is not W7 but W2. Also, Please note that I am considered as resident I guess, since my stay here is more than 180 days.
What form should I use?
Thank you.

It is not necessary that once you complete 183 days in the U.S. you are resident for tax purposes. For many visa types (for example F1) are exempt from the residency.

Agreed.