How do I increase my LinkedIn SSI score?

Start with the brand pillar, because it is the one buyers see. Use a face photo, a headline that names a buyer and a problem, an About section in plain language, and experience that is not a paste of your resume's mission statement. A logo-as-avatar and "Passionate growth hacker" will cap this pillar and your accept rate together.

Finding the right people means search with intent: title, industry, geography, and a trigger, not "CEO" worldwide. Save searches if you have Navigator. On a free account, be picky. Random scrolling does not teach the product who you serve.

Engaging with insights is comments and posts that add a fact or a question, not "Great share!" Under a prospect's post, say something specific about the thing they wrote. That is also how you warm a name before the invite.

Building relationships is accepts, replies, and conversations with people in your market, including seniors. Connecting with 200 students in another country to inflate the graph will not help SSI in a way you want, and it will not help outbound.

Give it a few weeks of real use. Checking the SSI page every afternoon is not a tactic. If the score moves and replies do not, you optimized the widget. Switch attention to who you invite and what you ask.