How can I be author in these sites ?

[dev mirani]

Business2Community, Score, Multichannel Merchant, CEOWORLD magazine, MyCustomer and several others on different verticals like these.

How can i approach them for to be their site author ?

 

[afif1]

have you tried contacting them via email?

 

[dev mirani]

have you tried contacting them via email?

I tired But i did't get any response from them

 

[Starblazer]

I found contributor pages for these sites:
https://www.business2community.com/become-a-contributorhttps://ceoworld.biz/contribute/
You should try contacting others for their preferences.