[NTREEG]

I'm just a beginner so a lot of this may be wrong or could be said more naturally. I welcome corrections because it'll help me improve my Japanese too.

Here's my best attempts:

When is your lunch period?
昼ごはんをいつ食べますか?
"Hiru gohan o itsu tabemasu ka?"
"When do you eat lunch?"


Have you made any friends yet?
まだ友達になりましたか？
"mada tomodachi ni narimashita ka?"


I will be your friend if you do not mind
一緒に友達になりましょうか？
"issho ni tomodachi ni narimashou ka?"
"Shall we become friends?"


I am excited to finally meet a person who is Japanese that I can talk to about my favorite music
好きな音楽を話すために、日本人に会えてとてもうれし いです。
"suki na ongaku o hanasu tame ni, nihonjin ni aete totemo ureshii desu."
"I'm very happy to meet a Japanese person in order to talk about the kind of music we like."


You should help me learn Japanese, and I will help you learn English
語学の修得なら、一緒に勉強してほうがいいと思います 。
"gogaku no shuutoku nara, issho ni benkyou shite hou ga ii to omoimasu."
"If we're to study languages, I think it would be good to study together."


It is very noisy
うるさいですね？
"urusai desu ne?"
"It's noisy, isn't it?"


Sorry, I have no idea how to say your last phrase.