This font is made by special font software. It is nothing more than importing the color background picture into the template library of the font software, and then directly inputting the text, and the color background picture is mapped into the 3D color of the text.

This kind of software is typically "Xara3D" (small 3D font software). You can check Baidu. There are many 3D font softwares on the Internet. After downloading one, you can search for some "color pictures" to download from the Internet, and then copy and paste the pictures directly into the "texture" (template library) in the "Xara3D" software. You can also make them very lively at will.

As for the production with PS, PS is too complicated, and it is completely unnecessary to use PS to make such pediatric text pictures.