My friends

I have seven good friends.
我有7个好朋友。

Four friends in my hometown, thay are my elementary school classmate. This is a correct translation if this is just a single sentence.  If you consider it as part of an essay, this needs to be reworded.
四个朋友在我的家乡，他们是我的小学同学。

Four of them are from my hometown, all my primary school classmates.

One of them is getting married next month. She was is [cannot use past tense.  意思是她現在不漂亮了或者死掉了!] very beautiful, and very high happy ["high" 在這裡的意思是吸了毒品或者是醉了, 飄飄欲仙]. I might may [事情還沒有發生] go to her wedding.
其中一个下个月结婚，她非常漂亮，而且很高。也许我会去她的婚礼。

The remaining three have their own family.
其他的三个都有自己的家庭。

The rest already have their own families. [Here, from the way you wrote, it meant your hometown friends]

We won't can't [不能而不是不要]be seeing each other as often but when we do meet up, there is nothing we cannot talk about  frequently. But When the old friend met we would talk about this and that.
我们不能经常见面，但老朋友相聚时，我们总是无话不谈。

Tow Two friends was were my former colleagues. When I was in Shenzhen，we meet up regularly.
2个朋友是我的旧同事。我在深圳的时候，我们经常见面。

[Here both in Chinese and English, the sentence is quite ambiguous!  Are you referring to your four hometown friends or the other three?]

We would always eat have dinner together, watch movies, and or sometimes go travelling together.
我们一起吃饭，一起看电影，有时候还一起去旅行。

They have been are all married now.  Sometimes we will share some of our life experiences of life
她们已经结婚，有时我们会分享一些生活经验。

There is one friends in Beijing. She was my college classmates. She had has [這裡用過去詞是說女兒死了或者沒有了 (母女情斷)!] two daughters, so thus very busy. We just talking can only chat on the telephone.
1个朋友在北京。她是我的大学同学。她有2个女儿，非常忙。我们只是在电话中交谈。

I have some Still there are other friends. We are just play hang out [你們已經不是小孩了] together, but don’t discuss [our personal life] talk too much.
我还有其它一些朋友。我们只是一起玩，不会谈论太多。

Great way to learn English by translation.  This way, you learn more nuances in English.