You must enter the official page and select the option you want: if it is for a computer:

You can install it in the following browsers:

-Chrome

-Firefox

-Brave

-Edge

MetaMask
A crypto wallet & gateway to blockchain apps

1- Press download:

2- Add to Chrome

3- Add Extension

That’s it! You have successfully installed MetaMask extension!

You can also enter Google Play from your mobile and download the available version.