Navigate to Settings > Integrations > Google Analytics and check the box for Enable Google Analytics and GTM to Enable Google Analytics.
Enter either your Google Universal Analytics Tracking ID (starting UA-...) or your Google Analytics 4 Measurement ID (starting G-...) from your Google Analytics account.
You can then track visits to your OpenApply site in your Google Analytics account.
You can also enter a Google Tag Manager code. This will be in a format such as 'GTM-123ABCD'.