From a contracts standpoint up to lot 14, 386 F-35A, 149 F-35B and 85 F-35C have been ordered for USAF, USMC and USN respectively although budgets have funded 400 A, 151 B and 89 C up to FY 2020.
Actions Needed to Address Manufacturing and Modernization Risks 12 May 2020 GAO-20-339
"FAST FACTS The F-35 program produced more aircraft and negotiated lower prices in 2019. However, the program is not meeting standards aimed at ensuring consistent, high-quality products, and fielded aircraft do not meet reliability goals.
Also, the cost to modernize aircraft systems went up about $1.5 billion (14%) since the program’s May 2019 annual report to Congress. Due to development delays, this reporting requirement will expire before the effort is complete. We suggest Congress consider extending it.
We made 5 recommendations, including some to help the Defense Department make its modernization cost estimate more comprehensive and credible."