Why no Backlinks

I keep posting and have my website in the signature but Google analytics never shows any back links for this forum. Some of my hobby forums update readily after I post (Model Train Forum). Doesn’t Google crawl this forum or am I doing something wrong?

Could someone more familiar with this process clue me in?

i cant even get the InterNACHI CPI next to my name🙈

You have to change that in your profile.