@vanlinhithutech said:
I can't get the api and api key can anyone help me
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Google Translate

please help me

About the use of API see basic instructions here.
https://www.themoviedb.org/documentation/api
And here instructions on how to build an API Request.
https://developers.themoviedb.org/3/getting-started/introduction

And for you to get your 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