How can i move my model to the same position as mouse.hit.p?

I want to move my very small model that's a mesh to the same position as mouse.hit.p by selecting a tool

This might be what you are looking for!

workspace.Model:MoveTo(Vector3.new(1,2,3))

or in your case,

workspace.Model:MoveTo(mouse.hit.p)

well since you're using a local script you can do this, first you gotta define mouse, and lets say x is what you're trying to place at the mouse

local mouse = player:GetMouse()

local x = Instance.new("Part")
x.CFrame = mouse.hit.p

this should be what you're looking for, you could also clone the part in the script or whatever you're doing