Good Luck Charlie font here refers to the font used in the title of Good Luck Charlie, which is an American television sitcom first aired on Disney Channel in 2010.
For the “charlie” part, it is probably handwritten and a font with a similar feel is Sydfonts designed Syed Hakim Omar. And for the “good luck” part, it is probably set in ITC Lubalin Graph, which is a commercial typeface and details about it can be viewed here.
Download Good Luck Charlie Font
We are currently unable to find a free alternative or a font similar to the commercial font identified above, and you will need to follow the relevant links above and purchase a font license.