Update WordPress site, migrate old content, add Google Reviews/Maps

I have an existing new WordPress website that needs updates and improvements. I also have an old WordPress website, and some content/data needs to be transferred to the new site. Some data has already been uploaded, while some content still needs to be transferred from the old website... (Budget: $10 - $30 USD, Jobs: API Integration, CSS, Elementor, Google Maps API, HTML, Mobile Development, Web Development, Website Design, Website Development, WordPress)