how do i get notice by record label company

This is not a simple question! But as a lifelong musician I relate to it, so I'll do my best to give you some real-world advice.

The most difficult thing about the music business is that it's a Business. Most creative people - especially young creative people - are totally focused on creating their art. As you should be! At your age, honing your craft is incredibly important. So whatever you do, always make time to create.

However, you also need to begin studying the business stuff. That means really trying to understand how money is made in the industry. Since so much of it happens online, there's a ton of information available and a million people writing articles about it every day. That's a lot to sift through, so I'll point you to two sources:

Follow this guy: https://twitter.com/davekusek
Dave Kusek is a Berklee College of Music legend who's dedicated himself to figuring out the NEW music business.
Follow him on Twitter and read the articles he posts. Some of it may be a little over your head, but the important thing is to absorb the idea that there are many connected pieces to making a music career happen. Record labels are only a small part of it, and frankly most are struggling to figure out how to support their artists.

Next, set a goal of self-publishing a song!
Through companies like cdbaby.com and tunecore.com, you can go through the whole process of digital publishing. None of this is free of course, but both companies offer a ton of free info and learning materials.

Finally, understand that nobody is in charge of your success but you.
The days of record companies scooping up artists and "developing" them are long over.
Fortunately, there's never been a better time to develop yourself; there's so much information out there online, all for free.
Your job is to balance your time between your art and learning the language and components of the business.

As for me, I went to music school, played in tons of bands, released albums, played on tours – and ultimately developed a successful career in a different creative field, design. Stay open-minded and remember that creativity is useful in many forms, and people who are creative in business are well-positioned to succeed. Good luck!

A good way is to send a demo tape to a desired record company. Second, to make some live performances, some talent hunters are visiting live acts.

Practice like crazy so that you sound good live. Record a finished song. Push your music (after you get opinions from other people besides friends and family who think the music is really good) through social networks like Soundcloud, Facebook, etc. When I worked at a record label, they recommended a 10,000 fan base before attempting to get serious with a label. Luckily, you can self publish and release your music before thinking about a label. Be patient, get better at your craft and try to record your ideas in your phone, if you have one. Then put those ideas into a recording program/D.A.W. (digital audio workstation) like Garageband and keep working on them and listening to them until they become as good as some of your favorite artists. This would be my advice to start with. First write and record and then post online and promote.
Good luck!