There is no definitive answer to this question as font preferences can vary greatly depending on the current market trends.
However, some popular font styles that have a wide appeal include sans-serif, serif, script, and display fonts. Ultimately, the best font for selling will depend on the overall design goals and the target audience.
We suggest browsing marketplaces like MyFonts or freely downloadable font sites like FontSpace to check what’s trending. Most sites will let you browse by popularity.