Hello thanks for the query.
Please use Tag Assistant (by Google) Extension for Chrome. Follow this for better assistance –
https://support.google.com/analytics/answer/1008083?hl=en
If you simply activate the Global tracking you can test in checking Real-Time by some random visits in Google Analytics.
And if you’ve also activated the Enhanced Ecommerce feature so you need to make some dummy transactions. You can check it Under Conversion > Ecommerce > Product Performance by selecting a particular date.
P.S. It takes some time to update transactions in the transaction dashboard. Generally it not take more than a day.
Hope this will help. Let us know if still face any issue
With Regards
MakeWebBetter