Lipstick is the one thing many brides struggle with. My suggestion is to find a few shades you like and wear them regularly to see if you truly love the colour (and texture) of the lipsticks. You'll be able to narrow it down to the one shade you like.
Here is a list of shades that I recommend:
Mac Cosmetics: Honeylove, Jubilee, Peach Blossom, Brave, Patisserie, Amourous
Charlotte Tilbury: Pillow Talk, Pillow Talk Intense, Dancefloor Princess
Nars: Barbara, Raquel, Brigitte, Vanessa, Tonka, Dolce Vita
There are of course so many other lipsticks to choose from, these are just a few personal favourites that I have used on past brides. Of course there is always the option of wearing a red lipstick for your wedding day. If you don't usually wear a bold lip colour I would advise against wearing something so different to your norm!
Some of my favourite go-to red lipsticks are from Mac Cosmetics: Feels So Grand - Retro Matte, Ruby Woo, Viva Glam 1, Mac Red.
All in all I suggest giving yourself some time to trial different shades, go into shops and ask a makeup sales assistant to try something on for you, although now times have changed it may not be possible. I do know that Mac Cosmetics has a virtual try-on on their website so definitely give that a look.
Hope this was helpful, that or I've given you too much food for thought!