You need to focus on getting your reports approved at an Exceptionally or Very Valuable level and participate in projects frequently. In order to increase your approval rate and submit high-quality reports, you need to read and follow instructions carefully, providing detailed bug reports with relevant screenshots or video captures, etc. If you do not intend to participate in a test cycle, decline the invitation rather than keep it pending or accept the invitation but not participating and not working in the test cycle. Failure to report bugs or test cases for test cycles you accept may eventually lead to a lower rating. Check out this Academy course to know more about what is good or bad for your rating: https://www.utest.com/academy/tracks/30/courses/tester-ratings