Hello Ali,

Thanks for reaching out to us. It depends on how long the service name is, but it would require a customization of the booking form, in terms of customizing the CSS code.

You can try this one

.am-adv-select__popper .am-adv-select__item-label { 
white-space: wrap;}

On the booking form, it will look like this 

Custom code needs to be applied to the page where the booking form is. Depending on what you're using (Gutenberg blocks, or some page builder), adding the CSS or JS can be done in a few different ways. 

If you need help with adding custom CSS to the page, please take a look at this article.

I hope it helps. Please, let us know if you have any other questions.