You are still a Catholic and will have to answer for the mortal sins of not attending Mass for 27 years at the moment of your death.
Do you want to rethink this — you have a responsibility to obey the Ten Commandments.
I am Catholic in the universal sense, just not Roman Catholic.
Sunday Mass is not part of the 10 commandments.
We have been redeemed from the Law.
Cor 2:16 Therefore let no one pass judgment on you in questions of food and drink, or with regard to a festival or a new moon or a Sabbath. 17 These are a shadow of the things to come, but the substance belongs to Christ. 18 Let no one disqualify you, insisting on asceticism and worship of angels, going on in detail about visions,d puffed up without reason by his sensuous mind, 19 and not holding fast to the Head, from whom the whole body, nourished and knit together through its joints and ligaments, grows with a growth that is from God.