Got a new Nikon Camera but?

Every time I take a picture, a box in front of it with like yellow graph pretty much pops up, how do i take that off?

The graph looks similar to that:

Time to sit down & RTFM.

Either post a link I can click on, or read the owners manual.

The histogram can sometimes be useful, but of course it sometimes just gets in the way. There should be a way to arrow up or down to change the display to make it disappear.
If you are having trouble finding it in the manual, if you have it as a.pdf file, the word to search for is
histogram

It's a status setting. It may be buried deep in the menu or just a click of a button. Choose how much info you want to see. If you see an Info (i) button that should be it.