In Brick Management, once you clone a brick or select Create Brick to create a brick from scratch and Publish it, you will get a pop-up window with a shareable URL (link) which can be shared anywhere.
You can also find this URL by going to Brick Management and clicking on My Bricks.
In My Bricks, there is “…” menu next to each of your bricks. Click on the “…” menu to reveal a dropdown menu. Select the Copy Student Link. The URL will automatically be copied to your computer’s clipboard and can be pasted wherever you would like.