Adding your RB2B tracking script in Tilda is easy.
Open Blocks Library
Go to the blocks library in your editor.
Locate the 'Embed HTML Code' Block
Locate T123 block "Embed HTML code". You can also type T123 in the blocks library search box.
Paste Your Tracking Script
Paste your RB2B tracking script as provided on the script page of your dashboard.
Save
Save your changes and test your site to ensure that the script has been installed properly.