How to redownload Mojave

Hi guy,

I just purchased a new Macbook Pro 13

I downloaded Mojave in the App store and clicked install.

After few minutes of installation I receive a message that the file is corrupt and that I should re-download Mojave.

The problem is that on my App store, I only have the option to open the file.
I guess, since it is already downloaded it somehow need to be deleted before re-downloading.
So, how do I get the App store to help me download it again??

Same happen when I tried to update sierra few days ago but then I was able to download the update directly from Apple website and install. That is kind of disappointing. I just decided to move to Mac from PC in order save myself time troubleshooting thing like that. I always thought that Mac suppose to work more smoothly.