The infinitive form can be either a "to infinitive" or a "bare infinitive", so you should say: It can help your company improve / to improve (I think the bare infinitive form is preferred in American English). So it's not correct to use "improves" in your sentence.
When to use improve and improves?
improve
- verb. If something improves or if you improve it, it gets better. Both the texture and condition of your hair should improve. [ ...
- verb. If a skill you have improves or you improve a skill, you get better at it. ...
- verb. If you improve after an illness or an injury, your health gets better or you get stronger.
When to use improve on or improve upon?
Definition of improve on/upon
: to do better than (something previously done) After months of study, I improved on my original score. It'll be hard to improve upon the success they had last year.
