It seems that some definitions are in order before I tidy up what I stated ealier;
Formless= (no possible feature or form*)
having no regular form or shape. 2. : lacking order or arrangement. 3. : having no physical existence.
Having form
The shape and structure of an object.
b. The body or outward appearance of a person or an animal considered separately from the face or head; figure.
2.
a. The essence of something.
b. The mode in which a thing exists, acts, or manifests itself; kind
Thing
1. An entity, an idea, or a quality perceived, known, or thought to have its own existence.
2.
a. The real or concrete substance of an entity.
b. An entity existing in space and time.
c. An inanimate object.
Unbounded
Having no boundaries or limits: unbounded space.
2. Not kept within bounds; unrestrained:
Unboundedness.
Having no boundaries or limits: unbounded space.
2. Not kept within bounds; unrestrained
Infinity
Having no boundaries or limits.
2. Immeasurably great or large; boundless:
3. Mathematics
a. Existing beyond or being greater than any arbitrarily large value.
b. Unlimited in spatial extent: a line of infinite length.
c. Of or relating to a set capable of being put into one-to-one correspondence with a proper subset of itself.
Finite
Having bounds; limited:
b. Existing, persisting, or enduring for a limited time only; impermanent.
2. Mathematics
a. Being neither infinite nor infinitesimal.
b. Having a positive or negative numerical value; not zero.
c. Possible to reach or exceed by counting. Used of a number.
d. Having a limited number of elements. Used of a set.
My reasoning for why there may be something beyond a finite universe.
I note that unbounded appears to have the same meaning as infinite.
I am treating "unbounded" as equivalent to "formless" in this consideration as "unboundedness" has no form in itself and "formless" is unbounded.
*For this argument I will alter the definition of formless slightly to;
No possible feature or form
A thing(x) refers to something which has form as opposed to formless.
A formless "thing" with any aspect of its formlessness which can possibly have any form(x) is not formless but a form or thing(x).
(I assume form(x)=thing(x))
Any conceivable form(x) is necessarily bounded by that form(x).
This form may have qualities which are unbounded

, however that "unboundedness" is also a quality of said form(x) it

can only have any boundary/form as an aspect of (x), as

has no form itself.
Hence

appears to be a form or thing through its association with (x).
We have the appearance of an unbounded form

in a universe in which only forms(x) can be found.
The form(x) the universe consisting of forms appears to be unbounded, but it only appears to be so due to the unbounded qualities of its forms.
In order for this universe to be unbounded,(x) would either be unbounded aswell as

, or (x) would be a quality or aspect of

.
This is not possible because if

has any aspect of its formlessness which has form(x), it is(becomes)(x) because it has form.
A universe constituted of numerous things(x), however big is always just a larger (x) and so on into infinity.
Hence the only way in which a finite universe can be unbounded is if it is an infinitely large universe.
This is the only way that (x)=

, as it would be possible to have an infinitely large (x)
It does also mean that 1=2.
If this universe is not infinite it cannot be unbounded and there may well be a beyond.
If so it is a thing with boundaries, if one thing why not two or three or four?
We're back to the turtles again(=infinity).