You have a few options. You can print, download a pdf (to easily share), or send a public link.

To Print or Generate PDF: Go to the grid, then on the top right of the grid you will find the Printer button. Once you click it, you will see two options: print grid or generate pdf.

To Find Public Share Link: you can share a read-only link of the squares. This can be found by clicking on the i with a circle (by the printer) and selecting "public read-only version of the grid".