In case your organization is not an Adobe Solution Partner, then you may reach out to your assigned Customer Support Manager or cuscare@adobe.comfor help.
If I understand correctly you are looking to get partner ACS sandbox access. If so, reach out to your adobe partner manager or spphelp (spphelp@adobe.com) to get guidance on this ask.
In case your organization is not an Adobe Solution Partner, then you may reach out to your assigned Customer Support Manager or cuscare@adobe.comfor help.