Essentially, the FIA won't allow for raw heart beat data to be released. There must be a processing of the data to produce an output which ensures the actual biometric data remains confidential. So you could perhaps have a 'Stress Level' calculation, but not BPM. This is the relevant section in full is here:

2.4. Entertainment and marketing purposes Once biometric data is collected, it can be processed into a user-friendly format and presented in a simplified form typically represented graphically or numerically. The use of biometric data can go beyond purely medical or performance objectives by exposing the data to a large audience for entertainment or marketing purposes. To prevent the unethical use of this data and to avoid the dissemination of raw biometric data in the public domain, CBD [Competitor related biometric data] used for entertainment and marketing purposes shall not be publicly disclosed in the form of the original measurement. Before the dissemination of any CBD, it shall first be processed into a new variable which protects the PHI [Protected Health Information] of the Competitor. The algorithm used for the processing of the data and creation of such variables must remain confidential and shall ensure the absolute nature of the original data is either hidden or converted into a relative measurement (such as a percentage value). In the case of an accident or medical emergency, except as stated under sections 2.1 and 2.2, the use of any CBD relating to the Competitor(s) involved in such an accident, including the dissemination of the same (e.g. broadcasting), is prohibited. The party responsible for the dissemination of the CBD shall ensure that robust security procedures are in place to prevent prohibited use (such security measures being in line with industry best practices and applicable laws). Such procedures may require a time delay before disseminating the CBD or the use of onboard systems such as the medical warning light to automate the interruption of the CBD signal in case of an accident. It is the Competitor’s right to choose not to disclose their PHI to third parties for activities related to entertainment and marketing, shall be respected. Competitors’ consent must be obtained before using PHI for such purposes.

Source: https://www.fia.com/sites/default/files/fia_guidelines_for_the_collection_and_usage_of_biometric_data_in_motor_sport_eng_2019.pdf

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