Install the brushes:

1. Unpack the archive into a separate folder - it's important.

2. Go to Blender and click append in the file tab.

3. In Explorer, find the location of the archive and click on the .blend file.

4. In the tab that opens, open the Brushes folder.

5. Select all the brushes from the package and click append.

6. After that, go into sculpting mode and choose the right brush.