can someone help me create these text effects ?

I suggest you educate yourself about text animators in the online help and experiment with the text animation presets. Easy enough to re-create those effects. Even if there may not be presets matching that exact Mario game look it would be simple to apply e.g. a wiggly selector to a position animator and have it do its magic.

https://helpx.adobe.com/after-effects/using/animating-text.html

Mylenium