Can A High Schooler with a GED and high school dipolma get into four year school?

Yes, a high schooler who has both a GED and a high school diploma can apply to four-year colleges and universities. Having both is redundant, as the high school diploma and the GED both fulfill the basic high school graduation requirement for college admission. The college admissions committee will likely only consider one, and may even prefer the high school diploma if both are submitted. However, the presence of both won't prevent them from applying. They will still need to meet all other admissions requirements, such as GPA, test scores (SAT/ACT), and any specific requirements of the chosen institution.