What do you mean by sexual health/behavior? I can think of a few related to sexual functioning (the International Index of Erectile Function and the Female Sexual Function Index), sexual desire (the Sexual Desire Index), or sexual satisfaction (Golombok Rust Inventory of Sexual Satisfaction; Global Measure of Sexual Satisfaction). Specifically assessing sexual health I don't know any. About Sexual Behaviors, I believe there's some questionnaires but I don't know any. Please let me know if you need any further help.
your topic is very broad and you didn't clarify target group, aim of study ,...
But the following article may be helpful!
The Role of Beliefs in Sexual Behavior of Adolescents: Development and Validation of an Adolescent Sexual Expectancies Scale (pages 639–648)Beth Bourdeau, Joel W. Grube, Melina M. Bersamin and Deborah A. Fisher
Version of Record online: 9 NOV 2010 | DOI: 10.1111/j.1532-7795.2010.00697.x