Does bolding of keywords in content help in SEO?
Bolding important points in your content is one factor in SEO but it should look natural, you shouldn't bold all the same keywords again and again.
Doing keywords bold is good for SEO but you can't do it again and again. You have to do this very carefully. You can also add heading tags, For examnle h1,h2,h3,h4,h5h6.