I dont speak english well and i am a litte confuse with the rules, i play on consolse but i am not sure if i can press up and right at the same time
Yes. I haven't submitted a run, but it doesn't say anything about going diagonal. You can move however you want, just can't constantly mash left and right or up and down.
You can't press Left and Right, or Up and Down, at the same time. As in the opposite directions on the d-pad. You can press Up and Right, Up and Left, Down and Right, Down and Left at the same time (these all move you diagonally, which is fine)! Hope this answers your question.
"Turbo, emulator specific functionality and techniques that simultaneously press Up+Down or Left+Right are all banned." There are specific rules and definitions on the alttp speedrun wiki, at the end of the categories section. I will admit, I don't know the rules about posting links... however you can find the wiki if you look in the guides section here for alttp on Speedrun. Also a lot of other good resources here, as well as a link for the discord I believe.
Goodluck and have fun on the runs.
