Possibly dumb question about a Set Node

For whatever reason, I have not been able to find this node:
I’m new to UE4 and i’m currently following a tutorial on how to do this BUT CANNOT FIND THIS NODE.
Thanks in advance.

you can find the GET and SET nodes when working with variables, in your case you want to set the variable Max Walk Speed of the Character Movement Component

be sure you are on a character blueprint and drag the character movement component to the blueprint

then you can see every variable of this component, including max walk speed