How can i prmote business and what to do for sale and marketing?

iam going for job interview as sales& marketing role. but i dont have enough experience for this position. can you help me please

Sorry, but your question lacks focus. There is no single answer to this...every company is different. You need to examine the specific company you are targeting, and put together a set of ideas that will generate business for them.

Trust your instincts! Ask yourself what kind of person wants this product/service? Where will you find them? How will you educate them on your offerings?

Put yourself in the position of the customer, and think like they do.

You May Not Get The Job Since You Lack Experience. I Really Do Not Want To Disappoint You. Remember I Do Not Know EVERYTHING!
what is the role? what is the business? research the company, if you have time you can look at how they have marketed in the past and then in your interview you can talk about how you would change this.
make sure you don't make any spelling mistakes 1st i guess?

And where is this question going???
lost
It matters immensely what industry and company you are looking at. Research as much as you can online and anywhere else you can find info on the company. Do you know anyone else that works there? Ask them some things, if you do. You are selling yourself when you go to the interview. That is the main thing to remember. First impression can be more than half of the scoring in the interviewer's mind(s). To be successful you have to be able to build client relations--a partnership, if you will, in your client's success with your product or service helping your "partner"/client be successful. You can only do that by understanding your product service, your client and their needs, and be able to help them see you and your company as their partner and crucial to their success. If you can communicate this ability in your interview you will do well.
It depends on the company.

If it has a strong online presence they could use online marketing techniques such as Pay Per Click advertising, sponsored ads, banner ads, email marketing.

If it is a small local company it could use sponsorship of local events, local publications advertising, leaflets, telephone sales etc.