How many high-quality backlinks should we have on our sites

It depends on the competition for the keyword. Usually, 2-3 good backlinks for a keyword is sufficient to rank. Though there are more factors which impact the rankings.

There's no set number, but aim for diverse, high-quality backlinks. Strategies include guest blogging, networking with influencers, and creating valuable content.

thanks for all your replies..but it takes hard time for some of your fellow bloggers to trust you..

Focus on quality. Thousands of links can bring nothing while one good link can skyrocket destination page in the SERPs.