Spoiler – there is no safe amount. Based on a study of 29,682 people.
Conclusions and Relevance These findings suggest that, among US adults, higher intake of processed meat, unprocessed red meat, or poultry, but not fish, was significantly associated with a small increased risk of incident CVD, whereas higher intake of processed meat or unprocessed red meat, but not poultry or fish, was significantly associated with a small increased risk of all-cause mortality. These findings have important public health implications and should warrant further investigations.
https://www.inverse.com/mind-body/how-much-red-meat-is-healthy