And I made a my list about it.

You can combine the two above sentences to say "I'll post a list of the things I want to do"

・I want to knowlearn about many overseasforeign cultures.

In this context "learn" is better because its a process. "Many overseas" is fine, but "foreign" is more concise and natural.

And Do you want to do something?

Please comments in here.

I haven't been able to post for a long time.

So, if you want to say that you haven't posted, as a blunt statement, "I haven't posted in a long time" works best.

If you want to communicate that you've been wanting to post, but couldn't for any number of reasons, "I haven't been able to post in a long time." is more natural.

I'll post about what I want to do.

Grammatically, this sentence is correct. However, it's not the most natural sounding. It would be more common to say, "I'm going to post what I want to do."

And I made a my list about it.So I made a list. ¶
¶
You don't need to say, "about it" because it's already clear from everything else you've said, what you're talking about. ¶
¶
Grammatically speaking, "and" is used to show in addition to. Whereas "so" is used colloquially as an explanation. For example:¶
¶
"I'm going shopping. And I'm going out to dinner." This tells us, you're doing both things!¶
¶
"I'm going shopping. So, I'm going out to dinner." The implication here is that going out to dinner will be more convenient because you're out shopping. ¶
¶
So, in this paragraph "so" works better because you're explaining why/what the list is instead of adding a list on to something else.

・I want to know about many cultures over seas culture.

Personally, I think overseas as a term is better than "foreign" however, that might be a personal/regional thing.

・I want to be can speak and listen english.¶
I want to be fluent in english. ¶

It's more natural, and comprehensive to say you want to be fluent. Fluent/fluency is the ability to read/write/speak/listen in a language. For example:

1) You are fluent in your first language, and would like to be fluent in multiple.

2) I am working on my fluency in english.

And Do you want to do something?¶
What would you like to do?

"Do you want to do something?" is correct, however, "what would you like to do?" is more natural.

I haven't been to post forposted in a long time.

I think what you want to say is that you haven't been here to post in a long time, but I think this way the sentence says the same thing but flows a bit better.

・I want to buy a DIANA's Hi high-heel shoes.

・I want to know about many overseas cultures.

・I want to be canable to speak and listen eunderstand English.

The idiom for having the ability to speak a language is either "I can speak English" or for example "I am able to speak English". Both are perfectly fine. However, in this context, with a wish or want to do something, I think you need to use 'to be able to'.
Also, I think 'understand' makes more sense here because while you can always listen to another language, understanding it is a something different.

DWhat do you think about these things?

I'm waiting for your corrections and help.

Please comments in here.

if you want to use "comment" as a verb you write it like this, but if you want to use it as a noun you could write 'Please put your comments in here.'