How to Translate the Boosters
If you are looking to translate the booster that will use the same Currency and Goal amount, you can simply add the Translations on the Content tab:
If you have Shopify Markets published in multiple languages, you will find language options where you can manually add translated messages for each market:
Manually add the translation, and do not forget to use variables like {order-value} or {order-value-progress} for the progress amount to appear.
When customers will change the Language on your website, they will see the translated boosters.