i wanna have scripts be made out of my way of doing effects like realistic VHS & other retro stuff so it can be easier to add them without doing it all from multiple effects (i also use G'mic for doing those VHS & retro film look effects for my image edit artwork) so can scripts still be done even from G'mic effects?

Just do a tutorial of all the steps to get your effect(s).
I am sure if many enjoy the effect, it'll be turned into plug-in in no time.

ok im making a image tutorial with the screenshots i took of me doing a vhs effect of my own

Meow ! hehehe