Wordpress vs Bubble

I currently have a WordPress site, and I’m in the process of building another one with a landing page on Bubble. Is it possible to integrate the Bubble booking form into my existing WordPress site?

Additionally, if I decide to transition from my current WordPress site to Bubble, is it feasible to make this change without losing data from my current site?

Yes is it definitely possible you can do it through API or if you want easier method you can just embed it.

Depends on where your data in WordPress is store it is generally stored in WordPress in your hosting account but if it is hosted as well for like example in an external database then it is very easy to migrate