The new “Paste styles” feature makes applying identical styling with multiple blocks easier and faster. WordPress allows you to copy the block by clicking on “Copy Block” in the drop-down menu from the block’s settings panel:
You can then click on “Paste Styles” which is located in the drop-down menu of the new block that they intend to transfer the styling to:
Additional Sources: https://make.wordpress.org/core/2023/01/20/whats-new-in-gutenberg-15-0-18-january/#paste-styles