You can set Spanish language donation pages in Revv for your Spanish speaking donors. All form inputs and help text will be displayed in Spanish after enabling this feature.
Setting the page to Spanish changes that page globally, you will need to link to this page as your Spanish version
There is still some text on the form that you will need to translate - for example the "Donate" button, "Donor Covers Fees" callout, and "Login" callout are all customizable for organizations.
How To Set The Donation Form To Be In Spanish:
Navigate to the "Advanced" section of the page builder
Under "Locale" change from English to Spanish
Save the Page