What I am trying to do is make it as if you are burning when you enter a area. How can you do that?
You could make an area around somewhere you want to make the player burn that is Invisible and UnCollideable.
As a prerequisite, add a Fire isntance in ReplicatedStorage and add a script that acts as the damage dealer with code to damage the player once in a while and disable it.
What you then do is make a Touched event that checks if you don’t already have a fire instance in your character, and if you don’t have one, it’ll add the Fire instance in your character and enable the script.