Is there a way to change the speed of the player?

Im new to gdevelop and i still don’t know a lot of things. So I still don’t know some basic features and would like to know how to change the speed. I haven’t found any tutorials on how to do so and if changing speed of an npc or any other object is possible I would like to know so also.

Do you mean changing the speed of your player character?
If so, go to the “Edit Object” window for your player object, go to behaviors, and assuming you have the platformer behavior, there should be an option called “Max Speed.” Adjust that to change the speed to your preference.

Reply back if you actually meant something else.