Re: how much reading is required to acquire english writing skills.
Welcome to the forum, Muhammad Mansoor.
There is no magic number of pages. The more you read, the more your English is likely to improve , but that's all we can say. If you want to improve your writing skills then you will need to write. You can start by writing something about yourself and posting it here for our comments.
Please do not edit your question after it has received a response. Such editing can make the response hard for others to understand.