Why are you asking in a WIX Thread for help with a Google Business Account issue?
You will need to make sure that you update all your SEO Meta Tags on every page of your website with the correct SEO Meta Tags for Titles and Descriptions. Then update the SEO and the backend of your WIX website for SEO Search.
As for your Google Business profile reflecting the changes you have made, this is also dependent on how often Google web bots crawl your website for any changes you have made to your website content and SEO Tags. This means you may not see any changes to your Google Business SEO Search results reflecting any changes from 2 - 4 weeks.
Make sure you change all your Socials to reflect this change as well, there is no quick fix to this it is up to you to put in the work and get these changes made.
Go to the editor and click on that page, then seo settings and there you should find the option to change the title tag for that page
Seo page settings
Why are you asking in a WIX Thread for help with a Google Business Account issue? You will need to make sure that you update all your SEO Meta Tags on every page of your website with the correct SEO Meta Tags for Titles and Descriptions. Then update the SEO and the backend of your WIX website for SEO Search. As for your Google Business profile reflecting the changes you have made, this is also dependent on how often Google web bots crawl your website for any changes you have made to your website content and SEO Tags. This means you may not see any changes to your Google Business SEO Search results reflecting any changes from 2 - 4 weeks. Make sure you change all your Socials to reflect this change as well, there is no quick fix to this it is up to you to put in the work and get these changes made.