Is there a way to get the distance between two objects?

If checking the distance between a player and an object:

function getDistance(player, object)
    return player:GetDistanceFromCharacter(object.Position)
end

Otherwise, use the following.

function getDistance(object1, object2)
    return (object1.Position - object2.Position).magnitude
end

Both functions return the distance in studs between the two objects (or player and object).