If you are talking about the numerical value beside your username. Then it's actually easy but it becomes tougher as go up to a higher number. So let me suggest few things on how to help on your goal. Take note, this is not say I'm expert on it, in fact I'm just speaking based on my whole year experience to this platform.
1. Create upvote-able contents
It doesn't need to be a really long write-up because the important thing is the content and that value that the reader will acquire after reading or viewing your post. If other users like it and it's something that they relate to, then they will support and upvote as well. The upvotes will actually remunerate you a with tokens and reputation score.
2. Promote your post
It's not bad to promote your post through the use of promotional service from a bid-bots, in fact even the so-called high profile Steemit users are using it. The upvotes from bots who have a really high stake will actually boost your reputation score by a big leap. However, it isn't something that you can easily abuse, since it will bring your post to the trending page, it will also invite other users to vet for your content. Promote a good content and you will also acquire more upvotes while promoting a bad quality post will get you flags ( a negative reputation).
3. Lastly, utilize DApps
This may sound obvious, but I just want to highlight the use of DApps who are actually upvoting contents. There a lot of new DApps nowadays, however there are only few who seemed to have the power of a huge Whale. Since most DApps target a certain niche, so if it's something that enjoy doing then use the DApp and post a content that they value. Note, even a 1% vote from let's say @musing will actually add a number to your reputation score.
I hope it will help on you on your goal of achieving a higher reputation score. If you know other ways to do it, feel free to reply on my answer and I would gladly expand my answer for others to refer to. Cheers!
Image source: Pixabay.com
There are 2 ways to increaee your reputation on Steemit - the easy way and the hard way.
The easy way - the easy way to increase your reputation on Steemit is to buy upvotes. This is because the reputation score doesnt differentiate if the votes are paid for or not. So even though bots arent highly profitable anymore, they are a great way to quickly increase your reputation (if thats what you want). This is how some new users have a high rep after only being active on the platform for a few weeks.
The hard way - The hard way is to slog away on your blog day in, day out, producing content, and not buying upvotes. This way will take alot longer becuase your rep is based on how many upvotes you get, their value, and who they come from.
I have generally stuck to 'the hard way' because I know that rep score doesnt really matter to much (to me anyway), and is not really a true measure of quality content.