A year or two ago someone was trying to figure out how some low-income schools were able to get new uniforms for their bands every year. Turned out Dolly had been quietly donating new uniforms to them for decades.
More broadly, she donated massive amounts of money to schools, starting with her home county. When she was in school, her high school had about one in three students drop out. That number dropped to one in twenty. The Dollywood theme park literally just exists to create jobs in Dolly's community because the unemployment rate was pretty high. Employees are quite well paid before factoring in the total coverage of their healthcare, their family's healthcare, and their and their family's college education. The profits then go to the Dollywood Foundation, which operates things like the Imagination Library.