Fontsize is controlling the resolution of the text, so i cranked up the font size to get more resolution.
To lower the size of the label without losing resolution of the text i found 2 options;
1-Size of the parent, which in this case is the empty that carries the Text Mesh(named as “Label”).
2-Character Size tab of the component, which is Text Mesh.
I used the 2nd option, it was a random decision. After completing challenge i saw the tutor did used the 1st option.