jodi

I am using an orangePi and I had some scripts with bash but now I have put a screen with more resolution and now I see the text very small. How can you make the text look bigger? I have seen that if I press shift + +/- it increases the size of the letters and with stty size I see that the value of columns and rows has varied. But if I put stty cols 102 rows 29 it does not change the size of the characters. It doesn't work either if I run resize. What can I do?