How can I show only the items in repeater with a date equal to today?

Here we have more than just one problem!
You have to specify more your post.

If you want that someone do your programming-job, tahn you can take a look here…
https://www.wix.com/corvid/forum/community-discussion/need-a-little-help-with-your-site-hire-a-corvid-web-developer

If you need just some help on a specific issue, then you will get help.

And by the way, you will have to loop trough repeater, to achieve your aim.
This could help you out…
https://www.wix.com/corvid/reference/$w/repeater/foreachitem

Simple example-structure…

$w("#myRepeater").forEachItem( ($item, itemData, index) => {
2  $item("#repeatedImage").src = itemData.img;
3  $item("#repeatedText").text = itemData.description;
4} );

…in combination with using an “if-query” to clarify what shall happen.
Something like this, perhaps.