https://www.epo.org/en/service-support/faq/law-practice/unitary-patent/costs-unitary-patent-and-reductions-small-7
Where can I find the amounts of renewal fees for Unitary Patents?
The amounts of renewal fees due for Unitary Patents are defined in Article 2 of the Rules relating to Fees Relating to Unitary Patent Protection (RFeesUPP). They can also be viewed in the interactive fee schedule on the EPO website (select Unitary Protection Fees s fee group in the upper left corner).