How to create a chart with multiple readable values on the x axis

tidyverse
2

You can rotate the text

library(ggplot2)

tabela_sort <- data.frame(
  stringsAsFactors = FALSE,
            Number = c(47, 7, 6, 30, 12, 101),
           Country = c("Guyana","Armenia",
                       "Bangladesh","Egypt","Vietnam","Suriname"),
   GDP_Growth_Rate = c(26.2, 4.5, 3.8, 3.5, 2.91, 2.3),
             iso3c = c("GUY", "ARM", "BGD", "EGY", "VNM", "SUR")
)

ggplot(tabela_sort, aes(x = iso3c, y = GDP_Growth_Rate)) +
    geom_col() +
    theme(axis.text.x = element_text(angle = 90))

Created on 2021-06-13 by the reprex package (v2.0.0)

Note: Next time please provide a proper REPRoducible EXample (reprex) illustrating your issue.