The title Supreme Governor of the Church of England is often read as though it made the sovereign a kind of lay pope, and it does not. The holder cannot ordain, cannot celebrate a sacrament, and cannot define doctrine. What the office carried in Victoria's reign was patronage and a voice, exercised through ministers: bishops and deans were nominated by the Crown on the advice of the Prime Minister, and a sovereign with settled views could press those views in correspondence without ever giving an order.
Victoria used that channel against what she called extreme High Church opinion. She disliked vestments, incense and auricular confession, and she supported the Public Worship Regulation Act of 1874, which was framed to give bishops a quicker way of disciplining clergy who adopted ritualist ceremonial. The Act produced prosecutions and several imprisoned priests, and it is generally judged to have strengthened the movement it was meant to check.
Her own taste in worship was plain, short and Protestant, closer to the Book of Common Prayer read straight than to the elaborated liturgy the Oxford Movement had made fashionable. She preferred brief sermons and disliked ceremonial that drew attention to the priest. That preference matters historically because the Anglican settlement of the period was contested between parties, and the sovereign who nominated its bishops for sixty three years was not neutral between them.