Open up your Android Studio. Go to menu, choose Generate Signed APK and click Next.
Click Create new.
Enter all the details (all fields are mandatory) below and click Ok.
Enter the following details and click Next.
Enter Master Password and click Ok.
Open your browser and enter this URL, https://play.google.com/apps/publish/ . (I assume you already have google play developer account). Click Add new application.
Enter Title and click Upload APK.
Click Upload new APK to Production.
Click Browse. Select ***.apk file and click Open.
Wait until it finish uploading.
Go to Store Listing and enter all details for store listing.
Insert screenshots at least 2 screenshots. Maximum is 8 screenshots. JPEG or 24-bit PNG (no alpha). Min length for any side: 320px. Max length for any side: 3840px.
Insert your Hi-res icon and Feature Graphic. Your icon size must be 512px x 512px and Feature Graphic must be 1024px x 500px.
Go to Content Rating. Click Continue.
Enter Email address and Confirm email address. Then select your app category. Select UTILITY, PRODUCTIVITY, COMMUNICATION, OR OTHER.
Answer all questionnaire and click Saved questionnaires. Then click Calculate rating.
Click Apply rating.
Go to Pricing & Distribution. Choose Free. Then Malaysia in country section. In CONTAINS ADS section, choose No, it has no ads. In CONSENT section, select Content guidelines and US export laws. Scroll up and click Save draft. Then click Publish app.