If i have website, i have built so many backlinks using more than 5 or more forum websites, only some of the backlinks got indexed, when will other backlinks will get indexed from other websites..? How much time it takes..? Please explain.
what tool did you use in checking the back links? It takes time to get other links count as back links and some are really didn't count because of no follow.
Your links here on DigitalPoint are not going to be indexed because it is a nofollow forum. Many other webmaster forums are as well. That is why they are not indexed.
No follow backlinks may not be indexed. But you can use social bookmarking to index your backlinks faster.
No-follow backlinks may intervene in the process, so you should take advantage of social media. Some people say it takes google's bots/spiders up to 3 months to update it's entire index while others say that if your site is SEO optimized 100%, it should take only up to a week to see results. Personally, I post links on high PR forums and if you really are urgent, use ping services to ping the post you made on those forums. Pinging lets the search engines know that your site has been "exposed"
not sure what kind of backlinks you built but not all the links get indexed by itself. some of the links never get indexed due to the type of links and some of the links require some efforts from your end to get indexed. building backlinks to backlinks is a good idea to get which always gets the links indexed.