Hello, this scale is copyright and need a license for use. Go to the Neriscience website.
On the other side, you could find some information in Figures and Supplementary Material of Carlos Siordia's article : "Alternative Scoring for Physical Activity Scale for the Elderly (PASE)".
Logan SL, Gottlieb BH, Maitland SB, Meegan D, Spriet LL. The Physical Activity Scale for the Elderly (PASE) questionnaire; does it predict physical health?. International journal of environmental research and public health. 2013 Aug 30;10(9):3967-86.