There is no setting for that on the site itself, but @Bauke's Tildes ReExtended (Chrome, Firefox) has Hide Vote settings for yours and others comments and topics.

If Tildes ReExtended doesn't do exactly what you want, you can also install a plugin like Stylus that allows you to write your own CSS that gets injected on top of sites you visit. Definitely the more technical approach since you have to know how to figure out what you're targeting in the browser inspector, and then know the CSS to write to make the change, but it's an incredibly handy toolkit to have to customize sites you visit routinely.

As an example use case, I like to print articles from NHK News Easy, but their website doesn't format well for printing. I use Stylus and some CSS rules to remove everything but the article text and crank up the font size inside an @media print {} rule.

For hiding your comments' and topics' vote counts, you'd do something like:

article.comment.is-comment-mine .comment-votes {
    display: none;
}
article.topic.is-topic-mine .topic-voting {
    display: none;
}

I'm wondering if there's been previous discussion on the possibility of just removing votes entirely from Tildes? I could imagine it increasing comment quality