The president of Venezuela, Nicolas Maduro, has an approval rating of around 20% (e.g. this survey). These studies do have flaws, since some may not properly account for his support in the lowest-income neighborhoods, which tend to be more chavista—for instance, telephone surveys will underrepresent people who don't have telephones—but it's a baseline.
However, large numbers of citizens have immigrated to other countries over the last few years. This subset might not be representative of Venezuelan approval of Maduro as a whole. For instance, they might be more in favor of Maduro, because lower-income people might be more desperate to leave the country. Or they might be more against Maduro, since higher income people are more likely to be able to leave, or because people who dislike Maduro might be more eager to leave a country governed by him. Further, since the people who've left Venezuela, at about 1 million, are about 3% of the country's population and possibly a larger percentage of its adult population, their absence could influence Maduro's overall approval rating.
Has there been any research that measures Maduro's approval rating among the Venezuelan community abroad? If so, how high is it?