When I signed, I typed on the Youtube thing and types my Youtube name into it. Then when I went on my speedrun profile, I clicked on the red playbutton and it took me to youtube but not my account. My name on Youtube is The Riddler and I typed that in but it didn't take me to my account. Help?

Because YouTube Gaming is relatively new and speedrun.com admins haven't implemented that yet. Also, when you have a small channel, your youtube channel is on: youtube.com/<lotsofnumbers>

you need to type in the url to your profile, the name isnt enough.

If the option is available to you, you can also set a custom URL:

And then on your speedrun.com profile settings, enter the "c/<custom-name>":