Getting errors working with String Arrays

Do you mean doing something like this?

int sessionhs;
String shs;                                           
String[] hs = {shs};                                           
String[] lasths;     
String ahs1 = lasths[0];                               
int ahs = int(ahs1);

void setup() {
  size(1920, 1080);
 lasths =  loadStrings("hs.txt"); 
}

void draw() {
  lasths[0] = shs;
   if (sessionhs > ahs) {
     String[] hs = {shs};
     saveStrings("hs.txt", hs);
   }
}