Change the Screen Size of my Unity Game

Hello. I am Vidhdhi 
 I read the ad for the free position and hurried to apply for it, as I found my experience in this sphere may be very practical as well as helpful for your project’s benefit.
 My education, as well as work experience straightly, relate to Unity game development. To be short, I am mentioning the most relatable skills of mine to this position. 
 I believe my skills can make me an appropriate candidate for this position. Unity 3D Skills
  2D Games  3D Games  Facebook Instant games  Reskin 2d/3d Games  Photon Unity Multiplayer  Photon Unity Chat  C# scripting  3rd party Assets Usages  Basic Design work  Script-based animation (spreadsheet base and bone base(3D))  Android / IOS / WebGL platform build and development(App Submission)  Web game development  Social features integration  In-app purchase  Leaderboard Implementation  Firebase / Google Analytics Integration, firebase remote config, firebase real-time database, firebase cloud messaging  Google Play Games Integration  Ads Integration(Appodeal,Chartboost,Ad Mob,UnityAds,Facebook Audience Network,In Mobi)  Web service integration  Local game data storage Leaderboard integration  Particle system customization (basic)  Augmented Reality, Virtual Reality (basic)  Knowledge of Bit bucket, Github,Git, Teramind Hubstaff, task management system (Notion) Hoping to hear from you soon.
 Regards, Vidhdhi