You can embed Bit Form using a shortcode if it’s a WordPress website.
To embed it into another website, you need to add Bit Form to a WordPress site first and then use the Landing Page feature to embed it into the GHL webpage builder.

Supporting Documentation:
How you can embed shortcode
https://bit-form.com/wp-docs/getting-started/create-first-form/#how-you-can-embed-short-code
Landing Page Creation Guide using Bit Form:
https://bit-form.com/wp-docs/landing-page-creation-guide-using-bitform/