In the top menu go to the MORE item. The first sub-item in the drop down menu is Buyer Requests. So far so easy.
BUT... Being a new sellers, we don't see buyer requests permanently, we see them only for a limited time. At least that's what I heard. So don't be surprised if the list of buyer requests is empty most of the time.
And also... The buyer requests I have seen so far were either scams or from buyers trying to get a task done super cheap. So far I have not seen a single buyer request that was taken to be serious. But I have been looking only over a couple weeks, being new here myself.
In summary, when some people are suggesting to answer 10 buyer requests per day, that does not make any sense to me.
Hope this helps, even if it sounds discouraging.
And, by the way, if you are looking to get in your first order: There are better ways to do that instead of looking out for buyer requests.
The one big mistake I made was to assume that Fiverr would do the advertising for me. Well, for a 20% share in the revenue one might assume that they did. But look at it this way: With literally thousands of others also presenting their gigs on the same pages, your chances as a new seller to land a gig are almost zero. So, the advertising part of Fiverr's service is almost nil. What they take the 20% for is the handling of the order and giving you an international platform on which buyers can place their order with you. The advertising you have to do yourself!
I am exploring various ways of advertising myself at this time, social media, a well designed website, etc.. But this seems to be the key to success: Do your own advertising! If your customers are mostly local, you might even be better off directing them in your advertisement to your website directly, i.e. without an involvement of Fiverr. If you deal with international customers, the 20% charge on revenue might be worth it, though. Just my 2 cents...