@sakilAhmed said:
api key
How can I get API key ?

Request a TMDb API Key

3 ways for you to request your API Key

1 - Click here https://developers.themoviedb.org/3/getting-started/introduction
You will have access to several instructions for using the TMDb API service.
In the second paragraph you will find the necessary instruction for you to request an API Key.

2 - Directly on Your Profile > Settings > API :
https://www.themoviedb.org/settings/api
Click on the Create menu or click here on the API page.

3 - Click here https://www.themoviedb.org/settings/api/request