That and £4.90 will get you a ride on the London Metro. Unless you need a certificate in Adobe software to fulfill a graduation or employment requirement, it's not much value. ACA exams don't measure your skills or talents as a designer. They merely test your basic knowledge of a particular Adobe software and version. And each year, the versions change.
The last time I looked, Adobe exams had not been updated. The tests were still measuring knowledge of 5 year old software that nobody uses anymore. And I understood that proctored testing was on hold due to COVID-19.
Obviously graduation from a 3-4 year degree program carries more weight than a certificate. Later on, if you decide to teach at an Adobe Certified Training Center, then take the ACE exams which are much tougher than ACAs.